Regulation of Dietary Supplements: Background and Issues for Congress




Regulation of Dietary Supplements:
Background and Issues for Congress

Updated September 20, 2021
Congressional Research Service
https://crsreports.congress.gov
R43062




Regulation of Dietary Supplements: Background and Issues for Congress

Summary
Many Americans take dietary supplements (e.g., vitamins, herbs, sports nutrition supplements)
with the intention of meeting their nutritional needs, as wel as to improve or maintain their
overal health. These consumers want accurate information on the effectiveness and proper use of
dietary supplements and access to the dietary supplements of their choice. The federal
government has an interest in ensuring that the supplements Americans consume are high quality,
free from contaminants, and accurately labeled. Because dietary supplements are intended to
supplement the diet, their processing and manufacture are regulated by the U.S. Food and Drug
Administration (FDA) in a manner similar to food, with some differences that wil be outlined in
this report. The Federal Trade Commission (FTC), in coordination with the FDA, regulates
dietary supplement advertising.
In contrast with the authority under which drugs and medical devices are regulated, dietary
supplements are regulated as food under the Federal Food, Drug, and Cosmetic Act (FFDCA),
and the FDA general y does not take regulatory action on food or dietary supplements until
something goes wrong with a product that is on the market. The FDA has the authority to take
action regarding supplements that are labeled incorrectly (misbranded) or contain unsafe
ingredients (adulterated). The FDA is made aware of potential misbranding or adulteration
through inspections, adverse event reports, and citizen petitions.
FDA’s authority to regulate dietary supplements has changed over time. The Dietary Supplement
Health and Education Act of 1994 (DSHEA, P.L. 103-417) amended the FFDCA and FDA’s
authority to regulate dietary supplements. Specifical y, DSHEA defined the term dietary
supplement
; established requirements for new dietary ingredients (NDIs), labeling, and certain
claims for dietary supplements; and authorized FDA to promulgate regulations for dietary
supplement-specific current good manufacturing practices (CGMPs). The Public Health Security
and Bioterrorism Preparedness and Response Act of 2002 (P.L. 107-188) required the registration
of any facility manufacturing, processing, packing, or holding food (including dietary
supplements). In 2006, the Dietary Supplement and Non-Prescription Drug Consumer Protection
Act (P.L. 109-462) further amended the FFDCA to establish requirements for mandatory
reporting of adverse events associated with dietary supplements. In 2011, the FDA Food Safety
Modernization Act (FSMA, P.L. 111-353) provided FDA with mandatory recal authority for
adulterated food (including dietary supplements) and food containing undisclosed al ergens.
According to the 2014 FDA Health and Diet Survey, more than half of vitamin and mineral
supplement users reported thinking that the government preapproves these products before they
are marketed. While this is general y the case for drugs, it is not the case for dietary supplements.
Consumers, the health care and dietary supplement industries, Congress, and federal regulators al
have a stake in supplement identification, effectiveness, and safety. Current federal policy toward
regulating dietary supplements was intended to balance these competing interests. DSHEA
provided FDA the authority to take action against products that were unsafe or adulterated, but
emphasized that FDA should not take actions that would impose unreasonable regulatory barriers
limiting or slowing the flow of safe products and accurate information to consumers. As the
supplement market has grown and diversified, the regulatory and research questions have become
more complex. This report discusses recent areas of regulatory and legislative concern, including
the exclusion of certain drug ingredients from the dietary supplement definition, issues
surrounding supplement safety, and the role of supplements in individuals’ health.
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Contents
Dietary Supplements: An Overview ................................................................................... 1
FDA’s Authority to Regulate Dietary Supplements............................................................... 2
Adulterated and Misbranded Supplements ..................................................................... 3
Definition of “Dietary Supplement”.............................................................................. 4
FDA Dietary Supplement-Specific Requirements and Guidance........................................ 4

New Dietary Ingredients........................................................................................ 5
Current Good Manufacturing Practices .................................................................... 7
Labeling ............................................................................................................. 8
Claims ................................................................................................................ 9
Serious Adverse Event Reporting.......................................................................... 11
Compliance and Enforcement .................................................................................... 12
Dietary Supplement Marketing........................................................................................ 13
Issues for Congress ....................................................................................................... 14
Dietary Supplements and Drug Exclusion.................................................................... 15
Dietary Supplement Safety........................................................................................ 17
The Role of Dietary Supplements in Health and Health Care .......................................... 18
Concluding Comments................................................................................................... 21

Figures

Figure B-1. Example of a Dietary Supplement Principal Display Panel.................................. 23

Appendixes
Appendix A. Selected Laws Regulating Dietary Supplements .............................................. 22
Appendix B. Principal Display Panel, Dietary Supplements ................................................. 23
Appendix C. Acronyms Used in This Report ..................................................................... 24

Contacts
Author Information ....................................................................................................... 25


Congressional Research Service

Regulation of Dietary Supplements: Background and Issues for Congress

Dietary Supplements: An Overview
Dietary supplements are marketed for nutritional support and health promotion, as wel as for a
number of other uses, including weight loss and sports performance enhancement. These products
come in pil , capsule, and liquid form, as wel as in forms that may appear similar to conventional
food or beverages. Supplements contain dietary ingredients such as vitamins, minerals, and
botanicals, among others.
Dietary supplement use is common in the U.S. population. Data from the 2017-2018 National
Health and Nutrition Examination Survey (NHANES) indicate that 57.6% of U.S. adults reported
using any dietary supplement in the past 30 days, with higher use among women than men
(63.8% compared to 50.8%) and use increasing with age.1 Among al age groups, the most
commonly used dietary supplements were multivitamin-mineral supplements, followed by
vitamin D and omega-3 fatty acid supplements.2
The dietary supplement market has grown over time. According to a 2019 Food and Drug
Administration (FDA) press release, “what was once a $4 bil ion industry comprised of about
4,000 unique products, is now an industry worth more than $40 bil ion, with more than 50,000—
and possibly as many as 80,000 or even more—different products available to consumers.”3 In
2020, the dietary supplement industry reported record sales, with the U.S. supplement market’s
valuation reaching $55.75 bil ion by the end of the year.4
This report outlines the authority of the FDA to regulate dietary supplements and summarizes
dietary supplement-specific requirements for new dietary ingredients (NDIs), current good
manufacturing practices (CGMPs), labeling, and claims. The report also discusses adverse event
reporting for dietary supplements and other means of ensuring consumer safety through
enforcement of these authorities and regulations. Dietary supplement advertising, which is
regulated by the Federal Trade Commission (FTC) in coordination with FDA, is also discussed.
The report concludes with a discussion of policy issues related to the manufacture, regulation, and
use of dietary supplements, including the exclusion of certain drug ingredients from the dietary
supplement definition, issues surrounding dietary supplement safety, and the role of dietary
supplements in health.

1 Suruchi Mishra, Bryan Stierman, and Jaime J. Gahche et al., “Dietary Supplement Use Among Adults: United States,
2017–2018,” National Center for Health Statistics (NCHS) Data Brief No. 399, February 2021, https://www.cdc.gov/
nchs/products/databriefs/db399.htm.
2 Ibid.
3 FDA, “Statement from FDA Commissioner Scott Gottlieb, M.D., on the agency’s new efforts to strengthen regulation
of dietary supplements by modernizing and reforming FDA’s oversight,” February 11, 2019, https://www.fda.gov/
news-events/press-announcements/statement-fda-commissioner-scott-gottlieb-md-agencys-new-efforts-strengthen-
regulation-dietary.
4 Grebow, Jennifer, “Dietary supplement sales success post -COVID: How can industry keep the momentum going after
the pandemic?,” Nutritional Outlook, May 26, 2021, https://www.nutritionaloutlook.com/view/dietary-supplement-
sales-success-post -covid-how-can-industry-keep-the-momentum-going-after-the-pandemic. “ Supplement Market Hits
Record Growt h of 14.5%, According to Nutrition Business Journal’s 2021 Supplement Business Report,” Globe
Newswire
, June 28, 2021, https://www.globenewswire.com/news-release/2021/06/28/2254146/0/en/Supplement -
Market -Hits-Record-Growth-of-14-5-According-to-Nutrition-Business-Journal-s-2021-Supplement -Business-
Report.html.
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Regulation of Dietary Supplements: Background and Issues for Congress

FDA’s Authority to Regulate Dietary Supplements
The FDA,5 an agency within the U.S. Department of Health and Human Services (HHS),
regulates the processing, manufacture, and packaging of dietary supplements under the Federal
Food, Drug, and Cosmetic Act (FFDCA). The agency has the authority to deem food (and dietary
supplements) misbranded (i.e., inaccurately labeled or presenting false or misleading claims)6 and
adulterated (i.e., containing ingredients that pose a significant or unreasonable risk of il ness or
injury).7 FDA may recal food (including dietary supplements) under specified circumstances.8
As enacted in 1938, the FFDCA did not explicitly establish requirements for dietary supplements,
except that the law deemed a food misbranded if it was represented for “special dietary uses” but
its label did not include the required information about “its vitamin, mineral, and other dietary
properties.”9 In enacting this provision, Congress intended to al ow FDA to more closely regulate
claims for vitamins, minerals, and botanicals than those for conventional foods.10 In the 1940s,
FDA began to take action against vitamins, minerals, and botanical products if they made claims
about the treatment or prevention of disease, as the agency considered such products to be
unapproved drugs.11
FDA later tried to apply the Food Additive Amendments Act of 195812 to dietary supplements.
However, FDA’s approach to broadly interpret the food additive definition was struck down by
the courts.13 The Food Additive Amendments Act defined a food additive as “any substance the
intended use of which results or may reasonably be expected to result, directly or indirectly, in its
becoming a component or otherwise affecting the characteristics of any food,” unless the
substance is general y recognized as safe (i.e., GRAS) under the conditions of its intended use,
among qualified experts.14 Food additives must be approved by FDA prior to marketing, unless
GRAS or otherwise excepted from the food additive definition. To obtain approval of a substance
as a food additive, a person may submit to FDA a food additive petition, which proposes the
issuance of a regulation prescribing the conditions under which the additive may be safely used.15
The Food Additive Amendments Act general y shifted the burden of proof of safety of new food
additives from FDA to the manufacturer.16

5 Within the FDA, regulation of both food and dietary supplements falls within the purview of the Center for Food
Safety and Applied Nutrition (CFSAN), along with the Office of Regulatory Affairs (ORA).
6 FFDCA §403 [21 U.S.C. §343].
7 FFDCA §402 [21 U.S.C. §342].
8 FFDCA §423 [21 U.S.C. §350l].
9 P.L. 75-717, FFDCA §403(j) [1938].
10 National Research Council, “Dietary Supplements: A Framework for Evaluating Safety,” 2005, Washington, DC:
T he National Academies Press, pp. 28-31.
11 Ibid.
12 Food Additive Amendments Act of 1958, P.L. 85-929.
13 National Research Council, “Dietary Supplements: A Framework for Evaluating Safety,” 2005, Washington, DC:
T he National Academies Press, p. 31.
14 FFDCA §201(s) and §409 [21 U.S.C. §321(s) and §348].
15 FFDCA §409(b) [21 U.S.C. §348(b)].
16 National Research Council, “Dietary Supplements: A Framework for Evaluating Safety,” 2005, Washington, DC:
T he National Academies Press, pp. 28-31.
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FDA’s efforts to regulate supplements as drugs and food additives were met with resistance from
the industry and some in Congress and in 1994, DSHEA was enacted.17 DSHEA excluded dietary
supplement ingredients from the definition of a food additive 18 and deemed that dietary
supplements are food under the FFDCA.19 DSHEA also made changes to FDA’s authority to
differentiate certain aspects of dietary supplement regulation from regulation of conventional
foods, specifical y with respect to 1) NDIs, 2) CGMPs, 3) labeling, and 4) certain claims for
dietary supplements. Notably, DSHEA placed the burden of proof concerning dietary supplement
safety on FDA, requiring the agency to show that a dietary supplement ingredient is adulterated
rather than requiring the manufacturer to prove a supplement is safe prior to marketing.20 This is
in contrast to new food additives, which require submission of safety information in a food
additive petition prior to marketing, or drugs, which general y require submission of safety data
as part of a new drug application prior to marketing.
FDA’s authority with respect to dietary supplements has been further amended by subsequent
legislation. Appendix A provides a list of selected laws that have modified the dietary
supplement regulatory framework.
Adulterated and Misbranded Supplements
FDA has the authority to take enforcement action against misbranded (i.e., inaccurately labeled or
presenting unapproved claims)21 and adulterated (i.e., containing ingredients that pose a
significant or unreasonable risk of il ness or injury)22 dietary supplements in the form of warning
letters, product seizures, and in certain cases, mandatory recal s. It may also ban an ingredient
through the rule-making process.
Under the FFDCA, a dietary supplement is considered adulterated under specified circumstances
related to the product’s contents and manufacturing processes, including if
 the dietary supplement or dietary ingredient presents a significant or
unreasonable risk of il ness or injury either (1) under conditions of use
recommended or suggested in the product’s labeling, or (2) under normal
conditions of use, if none are set forth in the product’s labeling;
 the dietary supplement contains a NDI for which there is inadequate information
as to whether or not it presents a significant or unreasonable risk of il ness or
injury;

17 P.L. 103-417. Stephen H. McNamara and A. Wes Siegner, Jr., “FDA Has Substantial and Sufficient Authority to
Regulate Dietary Supplements,” Food and Drug Law Journal, 2002, vol. 57, no. 1, pp. 15-24. National Research
Council, “Dietary Supplements: A Framework for Evaluating Safety,” 2005, Washington, DC: T he National
Academies Press, p. 28-39.
18 FFDCA §201(s) [21 U.S.C. §321(s)], as amended by DHSEA §3(f). FDA regulations define a food additive as any
substance “the intended use of which results or may reasonably be expected to result, directly or indirectly, either in
their becoming a component of food or otherwise affecting the characteristics of food.” 21 C. F.R. §170.3.
19 FFDCA §201(ff) [21 U.S.C. §321(ff)]. FDA regulates food labeling, bottled water, food additives, infant formulas,
and the safety of food products (except for most meat and poultry products, which are regulated by the U.S.
Department of Agriculture). See http://www.fda.gov/AboutFDA/T ransparency/Basics/ucm194879.htm. See also CRS
Report RS22600, The Federal Food Safety System : A Prim er.
20 FFDCA §402(f) [21 U.S.C. §342(f)]. National Research Council, “Dietary Supplements: A Framework for
Evaluating Safety,” 2005, Washington, DC: T he National Academies Press, p. 24.
21 FFDCA §403 [21 U.S.C. §343].
22 FFDCA §402 [21 U.S.C. §342].
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 the Secretary declares the dietary supplement or a dietary ingredient therein to
pose an imminent hazard to public health or safety; or
 the dietary supplement contains a dietary ingredient that renders it adulterated
because it is a poisonous or deleterious substance rendering the product injurious
to one’s health.23
As mentioned, FDA bears the burden of proving that a dietary supplement is unsafe.24 A dietary
supplement is also considered adulterated if it has been prepared, packed, or held under
conditions that do not meet FDA’s CGMP regulations.25 A dietary supplement is considered
misbranded if its labeling is false or misleading or if it does not comply with supplement labeling
or claims requirements (see the “Labeling” section of this report).
Definition of “Dietary Supplement”
Prior to DSHEA, there was no statutory definition of dietary supplements. As amended by
DSHEA, the FFDCA defines a dietary supplement as a product (other than tobacco) that is not
represented as a conventional food and
 is intended to supplement the diet;
 contains one or more of the following dietary ingredients: vitamins, minerals,
herbs or other botanicals, amino acids, and other substances or their constituents;
 is intended to be taken by mouth as a pil , capsule, powder, tablet, or liquid; and
 is labeled on the front panel as being a dietary supplement.26
Under the FFDCA, an article27 that is an active ingredient in an approved drug, or that has been
authorized for investigation as a new drug and for which the existence of such clinical
investigations has been made public, is excluded from the definition of a dietary supplement and
may not be marketed as such.28 An exception to this is if FDA issues a regulation finding that the
use of the article in a dietary supplement is lawful.
An article that is approved as a drug or being investigated as a drug may be marketed in or as a
dietary supplement if it was marketed as a dietary supplement or as a food prior to such approval
or clinical investigation, unless FDA issues a regulation to the contrary.29
FDA Dietary Supplement-Specific Requirements and Guidance
Dietary supplements are general y regulated as food under the FFDCA. As such, they are subject
to fewer premarket regulations than other items within the FDA’s regulatory purview, such as

23 FFDCA §402(f) [21 U.S.C. §342(f)].
24 FFDCA §402(f) [21 U.S.C. §342(f)]. National Research Council, “Dietary Supplements: A Framework for
Evaluating Safety,” 2005, Washington, DC: T he National Academies Press, p. 24.
25 FFDCA §402(g) [21 U.S.C. §342(g)].
26 FFDCA §201(ff) [21 U.S.C. §321(ff)].
27 An article that is approved as a new drug can refer to the whole product or a component of the product. See FDA,
“Dietary Supplements: New Dietary Ingredient Notifications and Related Issues: Guidance fo r Industry,” Draft
Guidance, p. 43.
28 FFDCA §201(ff)(3)(B) [21 U.S.C. §321(ff)(3)(B)].
29 FFDCA §201(ff)(3)(A) [21 U.S.C. §321(ff)(3)(A)].
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drugs and medical devices.30 Similar to food manufacturers, dietary supplement manufacturers
must register their establishments with FDA,31 fol ow CGMPs,32 and must abide by nutrition
labeling and claims requirements.33 However, by law, some of these requirements are dietary
supplement-specific. Unlike food manufacturers, dietary supplement manufacturers are required
to report serious adverse events to the FDA.
In contrast to drugs, dietary supplements and their ingredients are general y presumed safe.
Although processors, manufacturers, and packers of dietary supplements are expected to adhere
to FDA regulations when bringing a new product to market, there is no pre-market approval
process for dietary supplements. However, the FDA must be notified of dietary supplements
containing NDIs and of dietary supplements labeled with certain claims prior to entering the
market. After a supplement is on the market, FDA has the authority to deem dietary supplements
misbranded or adulterated and may issue warnings or order a mandatory recal in certain
circumstances.34
The following sections provide details on FDA’s dietary supplement-specific authorities,
regulations, and guidance on NDIs, CGMPs, labeling (including packaging, inserts, and
information at the point of sale), claims, and serious adverse event reporting.
New Dietary Ingredients
A dietary ingredient is a vitamin, a mineral, an herb or other botanical, an amino acid, a dietary
substance intended to supplement the diet by increasing total dietary intake, or a concentrate,
metabolite, constituent, extract, or combination of the aforementioned ingredients.35 As defined
by DSHEA, an NDI is a dietary ingredient that was not marketed in the United States before
October 15, 1994.36 A firm that seeks to market a dietary supplement containing an NDI must
submit a notification to FDA, at least 75 days prior to marketing, establishing that a dietary
supplement containing the ingredient “wil reasonably be expected to be safe.”37 An exception to
the NDI notification requirement is if the dietary ingredient was “present in the food supply as an
article used for food in a form in which the food has not been chemical y altered.”38 In this case,
the dietary ingredient would stil be considered an NDI because it was not marketed as a dietary
ingredient (i.e., as or in a dietary supplement) prior to October 15, 1994, but it would be exempt
from the notification requirement.39
Dietary ingredients sold in the United States before October 15, 1994 are presumed safe based on
their history of use by humans and do not need to be reviewed for safety by the FDA (so cal ed
“grandfathered” ingredients). Currently, there is no authoritative list of dietary ingredients that
were on the market prior to October 15, 1994, although FDA has announced its intent to develop

30 For more information on drug and device regulation at the FDA, see CRS Report R42130, FDA Regulation of
Medical Devices
, and CRS Report R41983, How FDA Approves Drugs and Regulates Their Safety and Effectiveness.
31 FFDCA §415 [21 U.S.C. §350d].
32 FFDCA §402(g) [21 U.S.C. §342(g)].
33 FFDCA §403 [21 U.S.C. §343].
34 FFDCA §423 [21 U.S.C. §350l].
35 FFDCA §201(ff)(1) [21 U.S.C. §321(ff)(1)].
36 FFDCA §413(d) [21 U.S.C. §350b(d)].
37 FFDCA §413(a)(2) [21 U.S.C. §350b(a)(2)].
38 FFDCA §413(a)(1) [21 U.S.C. §350b(a)(1)].
39 FDA, Draft Guidance, “Dietary Supplements: New Dietary Ingredient Notifications and Related Issues: Guidance for
Industry,” August 2016, pp. 14-15, https://www.fda.gov/media/99538/download.
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such a list.40 The FDA Food Safety Modernization Act (FSMA), enacted in December 2010,
required FDA to clarify the definition of an NDI and to explain the requirements for safety
evaluation of NDIs within 180 days of enactment.41 The FDA published draft NDI guidance on
July 5, 2011.42 The draft guidance generated controversy, with some industry advocates
expressing concerns that the proposed guidance was burdensome and not in keeping with
DSHEA.43 In August 2016, FDA published a revised draft guidance, which has not been
finalized.44 FDA’s 2016 update elicited similar criticisms from some stakeholders as the 2011
version.45 In particular, industry expressed concerns about what constitutes an NDI, as wel as the
agency’s stance on synthetic botanicals and grandfathered ingredients.46 Public health advocates
contend that scientific evidence is necessary to demonstrate safety, particularly for NDIs, as
supplements continue to grow in popularity and usage.47 Industry advocates have stated the cost
of proving NDI safety would be too burdensome and would cause some manufacturers to drop
production of certain supplements.48
FDA regulations outline the information that must be included as part of an NDI notification,
including a “history of use or other evidence of safety establishing that the dietary ingredient,
when used under the conditions recommended or suggested in the labeling of the dietary
supplement, wil reasonably be expected to be safe.”49 Specifical y, an NDI must include (1) the
name and complete address of the manufacturer or distributor of the dietary supplement that
contains the NDI, or of the NDI; (2) the name of the NDI subject to the notification; (3) a
description of the dietary supplement(s) that contains the NDI, including the level of the NDI in
the supplement and conditions of its use; (4) the history of use or other evidence of safety
establishing that the dietary ingredient wil reasonably be expected to be safe; and (5) the
signature of the designated person.50 The 2016 NDI draft guidance provides additional detail

40 FDA, “Public Meeting to Discuss the Development of a List of Pre-DSHEA Dietary Ingredients,” October 3, 2017,
https://www.fda.gov/food/workshops-meetings-webinars-food-and-dietary-supplements/public-meeting-discuss-
development -list-pre-dshea-dietary-ingredients.
41 P.L. 111-353, §113(b).
42 FDA, “Draft Guidance for Industry; Dietary Supplements: New Dietary Ingredient Notifications and Related Issues;
Availability,” 76 Federal Register 39111.
43 For example, see Hyman Phelps & McNamara, P.C., “HP&M Files Comments on Draft NDI Guidance; Request
Withdrawal and Reissuance Reflecting DSHEA Intent,” press release, December 7, 2011, http://www.fdalawblog.net/
fda_law_blog_hyman_phelps/2011/12/hpm-files-comments-to-draft-ndi-guidance-request -withdrawal-and-reissuance-
reflecting-dshea-intent.html.
44 FDA, “Dietary Supplements: New Dietary Ingredient Notifications and Related Issues; Revised Draft Guidance for
Industry,” 81 Federal Register 53486, August 12, 2016,
45 For example, see Hyman Phelps & McNamara, P.C., “FDA Issues Long-Awaited Revised Dietary Supplement NDI
Draft Guidance,” August 14, 2016, https://www.thefdalawblog.com/2016/08/fda-issues-long-awaited-revised-dietary-
supplement -ndi-draft -guidance/. New Hope Network, “ T rades unite in opposition to FDA’s NDI guidance document,”
December 14, 2016, https://www.newhope.com/regulatory/trades-unite-opposition-fdas-ndi-guidance-document .
46 New Hope Network, “T rades unite in opposition to FDA’s NDI guidance document,” December 14, 2016,
https://www.newhope.com/regulatory/trades-unite-opposition-fdas-ndi-guidance-document .
47 Pieter Cohen and Scott Bass, “Injecting Safety into Supplements—Modernizing the Dietary Supplement Law,” New
England Journal of Medicine
, December 19, 2019, vol. 381, no. 25, pp. 2387-2389.
48 Natural Products Insider, “ NPA: Costs of NDI Submissions Could Be Overly Burdensome Based on FDA
Guidance,” January 12, 2017, https://www.naturalproductsinsider.com/regulatory/npa-costs-ndi-submissions-could-be-
overly-burdensome-based-fda-guidance.
49 21 C.F.R. §190.6.
50 Ibid.
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about the information that FDA believes should be submitted to the agency as part of the NDI
notification.
FDA must keep the information in an NDI notification confidential for the first 90 days after
receiving it.51 If the manufacturer or distributor submits additional information in support of the
NDI notification, FDA may reset the 75-day period and assign a new filing date.52 FDA does not
approve NDI notifications. Instead, as indicated in the draft guidance, the agency general y issues
one of four response letters: (1) a letter of acknowledgment without objection; (2) a letter listing
deficiencies that make the notification incomplete; (3) an objection letter raising safety concerns
based on information in the notification or identifying gaps in the history of use or other evidence
of safety; or (4) a letter raising other regulatory issues with the NDI or dietary supplement (e.g.,
the NDI or supplement is excluded from the definition of a dietary supplement).53
Current Good Manufacturing Practices
Dietary supplement processors, manufacturers, and packers are responsible for ensuring that a
dietary supplement or dietary supplement ingredient is safe by following CGMPs.54 CGMPs
establish the minimum standards for activities related to manufacturing, packaging, labeling, or
holding dietary supplements for the purposes of ensuring the product’s quality throughout the
manufacturing process to minimize the risks of a potential y unsafe or otherwise il egal product
from reaching the marketplace.
DSHEA authorized FDA to establish, by regulation, CGMPs specific to dietary supplements
modeled after the existing CGMPs for food.55 Dietary supplement-specific CGMPs were
requested by industry, citing concerns that CGMPs developed for conventional food products did
not adequately address the unique characteristics of dietary supplements. These regulations were
finalized in 2007,56 and largely addressed the concerns raised by the industry. Dietary supplement
CGMPs contain sections that detail additional quality control procedures and recordkeeping
requirements for each step in the manufacturing process.57 Following CGMPs should ensure that
final products do not include the wrong ingredients; too much or too little of a dietary
ingredient;58 contaminants such as natural toxins, bacteria, pesticides, glass, lead or other heavy
metals; or improper packaging or labeling. FDA noted in the final rule that “the focus of CGMP is
on process controls to ensure that the desired outcome is consistently achieved, and not on the
inherent safety of the ingredients used.”59

51 FFDCA §413(a) [21 U.S.C. §350b(a)].
52 21 C.F.R. §190.6(d).
53 FDA, “Dietary Supplements: New Dietary Ingredient Notifications and Related Issues: Guidance for Industry,” Draft
Guidance, p. 54.
54 FFDCA §402(g) [21 U.S.C. §342(g)];
55 FFDCA §402(g)(2) [21 U.S.C. §342(g)(2)], as amended by P.L. 103-417, §9.
56 21 C.F.R. §111. FDA, “Current Good Manufacturing Practice in Manufacturing, Packaging, Labeling, or Holding
Operations for Dietary Supplements; Final Rule,” 72 Federal Register 34752-34958, June 25, 2007.
57 FDA, “Dietary Supplement Current Good Manufacturing Practices (CGMPs) and Interim Final Rule (IFR) Facts,”
press release, June 22, 2007, http://www.fda.gov/Food/GuidanceRegulation/CGMP/ucm110858.htm.
58 Some researchers note that, for most botanicals, consensus has not been reached on analytical markers or
standardized analytical methods for determining the presence or quantity of the botanical. For example, see J Kemsley,
“Botanical Scrutiny,” Chemical and Engineering News, March 18, 2013, pp. 12-17.
59 FDA, “Dietary Supplement Current Good Manufacturing Practices (CGMPs) and Interim Final Rule (IFR) Facts,”
press release, June 22, 2007, http://www.fda.gov/Food/GuidanceRegulation/CGMP/ucm110858.htm.
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CGMP for dietary supplements apply to al domestic and foreign companies that manufacture,
package, label, or hold a dietary supplement for import and sale in any state or territory of the
United States, the District of Columbia, or Puerto Rico.60 This includes those involved with
testing, quality control, packaging and labeling, and distribution of dietary supplements, but
excludes retail establishments that are solely involved in the direct sale of dietary supplements to
individual consumers.
Labeling
Although dietary supplements are general y considered food for purposes of FDA regulation, they
have different labeling requirements set forth under the FFDCA. Dietary supplement labeling
includes packaging, inserts, and information at the point of sale. The Nutrition Labeling and
Education Act (NLEA) of 1990 amended the FFDCA to require that al foods, with certain
exceptions, bear nutritional content labels.61 The Dietary Supplement Act of 1992 created a one-
year moratorium on the implementation of NLEA with respect to dietary supplement labeling.62
In 1994, DSHEA provided FDA the authority to promulgate labeling regulations specific to
dietary supplements,63 and in 1997, FDA issued regulations addressing the statement of identity,
nutrition labeling, ingredient labeling, and nutrient content and health claims for dietary
supplements.64 While similar to the requirements for nutrition labeling of food, dietary
supplement labeling requirements differ in several specific aspects.65
Dietary supplements are required to have a supplement facts panel (as opposed to a nutrition facts
panel for conventional foods).66 Dietary supplement labels may display certain claims, discussed
in more detail below, but they must also display a standard disclaimer, and may not link the
supplement or its ingredients to the treatment of a specific disease. The FDA’s Dietary
Supplement Labeling Guide
sets forth the general display (principal display panel, or PDP) and
placement requirements of dietary supplement labeling.67 An example of a dietary supplement
PDP is shown in Figure B-1. Dietary supplement labels are required to have the following
information:
 a statement of identity (name of the dietary supplement, the term “dietary
supplement,” which may be modified);68
 the net quantity of contents statement (amount of the dietary supplement);69

60 21 C.F.R. §111.1
61 P.L. 101-535, §2.
62 P.L. 102-571, §202.
63 P.L. 103-417, §7.
64 FDA, “Food Labeling; Statement of Identity, Nutrition Labeling and Ingredient Labeling of Dietary Supplements;
Compliance Policy Guide, Revocation,” 62 Federal Register 49826, September 23, 1997.
65 For specific information on these differences, see FDA, Guidance for Industry: A Dietary Supplement Labeling
Guide,
April 2005, http://www.fda.gov/Food/GuidanceRegulation/GuidanceDocumentsRegulatoryInformation/
DietarySupplements/ucm2006823.htm.
66 Regulations regarding the layout and content of the supplement facts panel are at 21 C.F.R. §101.36.
67 FDA, Guidance for Industry: A Dietary Supplement Labeling Guide, April 2005, http://www.fda.gov/Food/
GuidanceRegulation/GuidanceDocumentsRegulatoryInformation/DietarySupplements/ucm2006823.htm.
68 FFDCA §403(s)(2)(B) [21 U.S.C. §342(s)(2)(B)], 21 C.F.R. §101.3.
69 21 C.F.R. §101.7.
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 a Supplement Facts Panel (nutrition labeling);70
 an ingredients list, and the quantity of such ingredients in the product; with the
exception of quantities for the ingredients included in “proprietary blends,”
which do not need to be listed;71 and
 the name and place of business of the manufacturer, packer, or distributor.72
Claims
In addition to the required labeling, the FFDCA permits (but does not require) manufacturers to
make certain types of claims about supplements’ benefits.73 Dietary supplement manufacturers
may not legal y claim that their product wil diagnose, cure, mitigate, treat, or prevent a specific
disease, and certain claims require FDA-approved disclaimers.74 FDA guidance provides details
on the disclaimers that must accompany certain claims on the product label.75 Similar to food
manufacturers, dietary supplement manufacturers may make nutrient content claims and health
claims.76 They may also make structure/function claims.77 These claims are explained below.
Nutrient Content Claims
A nutrient content claim is one that expressly or implicitly characterizes the level of a nutrient in
a dietary supplement.78 An expressed nutrient content claim (e.g., “contains 100 calories”) is one
that contains a direct statement about the level or range of a nutrient within the dietary
supplement.79 An implied nutrient content claim is one that either (1) describes the nutrient in a
manner that suggests that it is absent or present in a certain amount (e.g., “high in oat bran”) or
(2) suggests that the dietary supplement, because of its nutrient content, may be useful in
maintaining healthy dietary practices and is made in association with an express claim or
statement about a nutrient (e.g., “healthy”).80
Health Claims
Health claims describe a relationship between a food, food component, or dietary supplement
ingredient, and reducing risk of a disease or health-related condition;81 for example, “While many
factors affect heart disease, diets low in saturated fat and cholesterol may reduce the risk of this
disease.” These claims can be made through written statements, symbols, or vignettes.

70 21 C.F.R. §101.36.
71 FFDCA §403(s)(2)(A) [21 U.S.C. §342(s)(2)(A)], 21 C.F.R. §101.4, and 21 C.F.R. §101.36.
72 21 C.F.R. §101.5.
73 FFDCA §403(r) [21 U.S.C. §343(r)].
74 FFDCA §403(r)(6) [21 U.S.C. §343(r)(6)].
75 FDA, Guidance for Industry: A Dietary Supplement Labeling Guide, April 2005, http://www.fda.gov/Food/
GuidanceRegulation/GuidanceDocumentsRegulatoryInformation/DietarySupplements/ucm2006823.htm.
76 FFDCA §403(r) [21 U.S.C. §343(r)].
77 While structure/function claims are only authorized for dietary supplements (21 USC §343(r)(6) and 21 CFR
§101.93(f)), they are also widely used for food, and their use is not prohibited in statute, regulations, or guidance.
78 21 C.F.R. §101.13(b).
79 21 C.F.R. §101.13(b)(1).
80 21 C.F.R. §101.13(b)(1) and (2); and 21 C.F.R. §101.65.
81 21 C.F.R. §101.14.
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For the FDA to authorize use of a health claim on dietary supplement labeling, it must meet
certain criteria.82 General y, they must meet a significant scientific agreement (SSA) standard, as
determined by the FDA, in order to be authorized in regulation by the FDA.83 The FDA
authorizes health claims only when the agency “determines, based on the totality of publicly
available scientific evidence (including evidence from wel -designed studies conducted in a
manner which is consistent with general y recognized scientific procedures and principles), that
there is significant scientific agreement, among experts qualified by scientific training and
experience to evaluate such claims, that the claim is supported by such evidence.”84
Health claims may also be authorized based on authoritative statements from federal scientific
bodies. The latter type of claim was authorized in the FDA Modernization Act (FDAMA),
although not for dietary supplements.85
Another type of health claim, known as a qualified health claim, may be used for dietary
supplements. Qualified health claims are based on less scientific evidence than the SSA required
for other health claims, but must be approved by the FDA (however, they are not required to be
authorized in statute or an authorizing regulation).86 FDA guidance provides standardized
qualifying language to use with qualified health claims.87
Structure/Function Claims
In addition to health and nutrient content claims, dietary supplement manufacturers are al owed to
make statements describing the role of their nutrients’ or dietary ingredients’ intended effect on
the structure or function of the body.88 Structure/function claims describe how a product may
affect the organs or systems of the body, but cannot mention any specific disease89 (for example,
“calcium builds strong bones”). A structure/function claim describes the role of a dietary
supplement in the structure and functions of the body, and must provide truthful and non-
misleading claims that describe this role.90
Although FDA preapproval is not required for structure/function claims, manufacturers must have
substantiation (evidence) for these claims, notify FDA within 30 days of a product being
marketed with a structure/function claim on its label, and provide a two-part disclaimer on the

82 21 C.F.R. §101.14(b)(1)-(3).
83 FFDCA §403(r)(5)(D) [21 U.S.C. §343(r)(5)(D)]; 21 C.F.R. §101.14(c).
84 21 C.F.R. §101.14(c). T his standard is referred to as the significant scientific agreement (SSA) standard. For more
information on the SSA review process, see FDA Guidance for Industry: Evidence-Based Review System for the
Scientific Evaluation of Health Claim s
, Silver Spring, MD, January 2009, http://www.fda.gov/Food/
GuidanceRegulation/GuidanceDocumentsRegulatoryInformation/ucm073332.htm.
85 P.L. 105-115, §303. FDA, “Label Claims for Conventional Foods and Dietary Supplements,” current as of June 19,
2018, https://www.fda.gov/food/food-labeling-nutrition/label-claims-conventional-foods-and-dietary-supplements.
86 FDA, Guidance for Industry: A Food Labeling Guide, October 2009, p. Appendix D, http://www.fda.gov/Food/
GuidanceRegulation/GuidanceDocumentsRegulatoryInformation/LabelingNutrition/ucm064923.htm.
87 FDA, Guidance for Industry: Interim Procedures for Qualified Health Claims in the Labeling of Conventional
Human Food and Human Dietary Supplements, July 2003 , current as of September 20, 2018, https://www.fda.gov/
regulatory-information/search-fda-guidance-documents/guidance-industry-interim-procedures-qualified-health-claims-
labeling-conventional-human-food-and.
88 FFDCA §403(r)(6) [21 U.S.C. §343(r)(6)].
89 Ibid. 21 C.F.R. 101.93(f).
90 FDA, Guidance for Industry: A Dietary Supplement Labeling Guide, April 2005, http://www.fda.gov/Food/
GuidanceRegulation/GuidanceDocumentsRegulatoryInformation/DietarySupplements/ucm070613.htm#6-43.
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supplement label.91 First, the label must state that the statement or claim has not been evaluated
by the FDA. It must also state that the dietary supplement product is not intended to “diagnose,
treat, cure, or prevent any disease.”92
Serious Adverse Event Reporting
Dietary supplements are not required to undergo premarket review for safety. To identify safety
issues, the FDA mainly relies on information provided by manufacturers under the adverse event
reporting system. The FDA created a voluntary adverse event reporting system for supplements in
1993.93 This system was designed to (1) detect adverse events; (2) generate and assess signals of
potential public health concerns; (3) take appropriate actions based on these assessments.
According to an HHS Office of the Inspector General (OIG) report, that system provided
inadequate data on adverse events, due to its voluntary nature and limited scope.94 The OIG report
concluded that the reporting system detected relatively few adverse events, lacked adequate
information to assess possible health concerns, and contained limited medical, product, and
consumer information.95
The Dietary Supplement and Non-Prescription Drug Consumer Protection Act, enacted in 2006,
required several changes to the adverse event reporting system for dietary supplements.96 It
amended the FFDCA to require supplement manufacturers, packers, and distributors to submit
reports of serious adverse events involving their products that occur in the United States, and it
also required the FDA to create and maintain a system to track adverse events related to dietary
supplements.97 The CFSAN Adverse Event Reporting System (CAERS) contains information on
adverse event and product complaint reports submitted to FDA for foods, dietary supplements,
and cosmetics.98 The public may also submit adverse event reports to this adverse event reporting
system. Public submission of adverse event reports is voluntary.
A GAO report identified 6,307 reports of adverse events from 2008 through 2011, of which 71%
came as serious adverse events from industry, as mandated by the Dietary Supplement and Non-
Prescription Drug Consumer Protection Act.99 Another study from CFSAN reported that between
2004 and 2013, based on CAERS data, FDA received more than 15,000 adverse event reports
(67% of which were mandatory), with serious reported outcomes such as death and

91 FFDCA §403(r)(6) [21 U.S.C. §343(r)(6)].
92 Ibid; 21 CFR §101.93(f)-(g).
93 Office of the Inspector General, Department of Health and Human Services, Adverse Event Reporting for Dietary
Supplem ents: An Inadequate Safety Valve
, April 2001, https://oig.hhs.gov/oei/reports/oei-01-00-00180.pdf.
94 Ibid.
95 Ibid.
96 FFDCA §761 [21 U.S.C. §379aa-1], as amended by P.L. 109-462, §3. An adverse event is defined as “any health-
related event associated with the use of a dietary supplement that is adverse;” and a serious adverse event is defined as
“an adverse event that —(A) results in—(i) death; (ii) a life-threatening experience; (iii) inpatient hospitalization; (iv) a
persistent or significant disability or incapacity; or (b) requires, based on reasonable medical judgment, a medical or
surgical intervention to prevent an outcome described under subparagraph (A).”
97 P.L. 109-462, Section 3. Information on how to submit an adverse event report can be found at http://www.fda.gov/
Food/DietarySupplements/ReportAdverseEvent/default.htm.
98 FDA, “CFSAN Adverse Event Reporting System (CAERS),” current as of July 29, 2020, https://www.fda.gov/food/
compliance-enforcement-food/cfsan-adverse-event-reporting-system-caers.
99 GAO, Dietary Supplements: FDA May Have Opportunities to Expand its Use of Reported Health Problems to
Oversee Products
, GAO-13-244, March 2013, p. 1, http://www.gao.gov/products/GAO-13-244.
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hospitalizations, among others.100 In FY2020, FDA reported receiving more than 3,112 adverse
event reports related to dietary supplements,101 an increase from FY2019, during which FDA
received more than 2,559 such adverse event reports.102 FDA has estimated that, due to significant
underreporting, the annual number of adverse events linked to dietary supplements may be
50,000.103 This may be because consumers may not consistently report adverse events to the
FDA, and/or they may be contacting poison control centers, which general y do not send
information about adverse events to the FDA.
Another study looked at visits to U.S. emergency departments from 2004 through 2013 that were
due to adverse events related to dietary supplements.104 The study estimated that 23,005
emergency department visits each year were attributed to adverse events related to dietary
supplements.105
Adverse events that are linked to a dietary supplement or a dietary supplement ingredient by an
adverse event report are usual y not considered sufficient to warrant action against a product.106 A
pattern of seemingly related events linked to a dietary supplement may cause FDA to investigate
the product or take further action.107
Compliance and Enforcement
Consistent with FDA’s regulation of conventional foods, the agency does not approve dietary
supplements prior to marketing. This contrasts with drug regulation, where the manufacturer must
prove the safety and effectiveness prior to marketing a product.108 Because the bulk of FDA’s
regulatory authority with respect to dietary supplements exists for products that are already on the
market, this is general y where FDA concentrates its enforcement activities to determine
compliance with its regulations.
In addition to the serious adverse event reporting system, several other mechanisms exist to
identify potential safety concerns. These include conducting inspections, screenings, and recal s.
Through these efforts, FDA has identified dietary supplements that contain undeclared or
deceptively labeled ingredients.109 For example, one analysis of FDA data reported that 776
adulterated dietary supplements were identified by the agency from 2007 through 2016, of which

100 Babgaleh B T imbo, Stuart J Chirtel, John Ihrie, et al., “Dietary Supplement Adverse Event Report Data From the
FDA Center for Food Safety and Applied Nutrition Adverse Event Reporting Sy stem (CAERS), 2004-2013,” May
2018, vol. 52, no. 5, pp. 431-438.
101 FDA, FY2022 Justification of Estimates for Appropriations Committees, p. 69, https://www.fda.gov/media/149616/
download.
102 FDA, FY2021 Justification of Estimates for Appropriations Committees, p. 59, https://www.fda.gov/media/135078/
download.
103 GAO, FDA Should Take Further Actions to Improve Oversight and Consumer Understa nding, 09-250, January
2009, http://www.gao.gov/products/GAO-09-250.
104 Andrew Geller, Nadine Shehab, Nina Weidle, et al., “Emergency Department Visits for Adverse Events Related to
Dietary Supplement s,” New England Journal of Medicine, October 2015 vol. 373, pp. 1531-1540.
105 Ibid.
106 GAO, Dietary Supplements: FDA May Have Opportunities to Expand its Use of Reported Health Problems to
Oversee Products
, GAO-13-244, March 2013, p. 1, http://www.gao.gov/products/GAO-13-244, p. 32.
107 Ibid.
108 For more information on drug approval and regulation, see CRS Report R41983, How FDA Approves Drugs and
Regulates Their Safety and Effectiveness
.
109 T hese may include, but are not limited to, active ingredients in FDA-approved drugs or their analogues and other
compounds that do not qualify as dietary ingredients, such as novel synthetic steroids.
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619 were found to contain one unapproved drug ingredient, and 157 products were found to
contain more than one pharmaceutical ingredient.110 Such products are often promoted for weight
loss, sexual enhancement, and bodybuilding. FSMA provided FDA the authority to notify the
DEA when it determines that an NDI may contain an anabolic steroid or its analogue.111 FDA
maintains a database of “tainted products” that are marketed as dietary supplements, noting that
“this list only includes a smal fraction of the potential y hazardous products with hidden
ingredients marketed to consumers on the internet and in retail establishments.”112 While the
agency may take steps to remove unsafe dietary supplements from the market, in the past, the
process for FDA to prove a significant or unreasonable risk was lengthy. For example, it took the
FDA 10 years to amass enough data to meet the statutory burden of proof for banning Ephedra
from the market.113
According to the FDA’s FY2022 Congressional Budget Justification, in FY2020, the agency’s
operations and oversight, including inspection activities, were significantly affected by the
Coronavirus Disease 2019 (COVID-19) pandemic, resulting in fewer dietary supplement
inspections conducted than in previous years. At the same time, the dietary supplement market
grew, reaching record sales in 2020.114 The agency’s FY2020 compliance activities resulted in 49
warning letters, 15 detentions, and one injunction filed with respect to dietary supplements.115
Dietary Supplement Marketing
Although the FDA has broad regulatory authority over dietary supplements, the agency shares
some responsibility with the Federal Trade Commission (FTC).116 While the FDA regulates
claims made on product labeling (including packaging, inserts, and information at the point of
sale), the FTC has primary responsibility to regulate dietary supplement advertising.117 This
includes print and broadcast advertisements, infomercials, catalogs, Internet marketing, and
similar direct marketing materials. The FDA and FTC have the responsibility to ensure that both

110 Jenna T ucker, T essa Fischer, Laurence Upjohn, et al., “Unapproved Pharmaceutical Ingredients Included in Dietary
Supplements Associated With US Food and Drug Administration Warnings,” October 12, 2018, JAMA Network Open,
vol. 1, no. 6.
111 FFDCA §413(c) [21 U.S.C. §350b(c)], as amended by P.L. 111-353, §113.
112 FDA, “ T ainted Products Marketed as Dietary Supplements_CDER,” page last updated March 29, 2021,
https://www.accessdata.fda.gov/scripts/sda/sdnavigation.cfm?sd=tainted_supplements_cder.
113 GAO, Food Safety: FDA Has Begun to Take Action to Address Weaknesses in Food Safety Research, but Gaps
Rem ain
, 10-182R, April 23, 2010, p. 10, http://www.gao.gov/assets/100/96676.pdf.
114 Grebow, Jennifer, “Dietary supplement sales success post -COVID: How can industry keep the momentum going
after the pandemic?,” Nutritional Outlook, May 26, 2021, https://www.nutritionaloutlook.com/view/dietary-
supplement -sales-success-post-covid-how-can-industry-keep-the-momentum-going-after-the-pandemic. “ Supplement
Market Hits Record Growth of 14.5%, According to Nutrition Business Journal’s 2021 Supplement Business Report,”
Globe Newswire, June 28, 2021, https://www.globenewswire.com/news-release/2021/06/28/2254146/0/en/Supplement -
Market -Hits-Record-Growth-of-14-5-According-to-Nutrition-Business-Journal-s-2021-Supplement -Business-
Report .html.
115 FDA, FY2022 Justification of Estimates for Appropriations Committees, p. 68 -69, https://www.fda.gov/media/
149616/download.
116 FDA, Memorandum of Understanding (MOU) with Federal T rade Com mission Concerning Exchange of
Information (FDA-225-71-8003), https://www.fda.gov/about-fda/domestic-mous/mou-225-71-8003.
117 15 U.S.C. §45(a)(1).
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dietary supplement labeling and advertising is truthful, not misleading, and that any claims made
may be substantiated.118
The FTC’s authority derives from Section 5 of the Federal Trade Commission Act that prohibits
“unfair methods of competition in or affecting commerce, and unfair or deceptive acts or
practices in or affecting commerce.”119 Additional y, the FTC Act prohibits dissemination of false
advertisements by any means for the purpose of inducing the purchase of food, drugs, devices,
services, or cosmetics.120 The FTC Act defines false advertisements as “any advertisement, other
than labeling, which is misleading in any material respect.”121
Similar to the FDA, the FTC requires that supplement manufacturers’ claims are adequately
substantiated. The FTC has created a guide for industry, which outlines its expectations, role, and
enforcement efforts regarding substantiation.122 The FTC standard is summed up as the following:
 Advertising must be truthful and not misleading.
 Before disseminating an advertisement, advertisers must have adequate
substantiation for al objective product claims.
The FTC defines a deceptive advertisement as one that “contains a misrepresentation or an
omission that is likely to mislead consumers acting reasonably under the circumstances to their
detriment.”123 The FTC’s standard of substantiation for express and implied claims is one of
“competent and reliable scientific evidence,”124 which differs from FDA’s requirements for
health, nutrient content, and structure/function claims. The FTC general y enforces these
standards through targeted law enforcement action.125
Issues for Congress
Consumers, the dietary supplement industry, Congress, and federal regulators al have a stake in
supplement safety and quality. Current federal policy toward regulating dietary supplements was
intended to balance these competing interests. DSHEA provided FDA the authority to step in
against products that were unsafe or adulterated, but “not to take any actions to impose
unreasonable regulatory barriers limiting or slowing the flow of safe products and accurate
information to consumers.”126
Under current law, dietary supplements are general y regulated as food—meaning that the FDA
does not take regulatory action until something goes wrong (as opposed to drug regulation, where

118 “Business Guide for Dietary Supplement Industry Released by FT C Staff: Guide Will Assist Industry in Ensuring
T ruthful Ads,” Federal Trade Commission, November 18, 1998, http://www.ftc.gov/news-events/press-releases/1998/
11/business-guide-dietary-supplement -industry-released-ftc-staff.
119 15 U.S.C. §45(a)(1).
120 15 U.S.C. §52.
121 15 U.S.C. §55(a).
122 FT C, Bureau of Consumer Protection, Dietary Supplements: An Advertising Guide for Industry, April 2001,
http://business.ftc.gov/documents/bus09-dietary-supplements-advertising-guide-industry.
123 Ibid.
124 Ibid.
125 FT C, Deceptive Marketing of Dietary Supplements FTC Enforcement Activities, Prepared Statement Before the
Senate Special Committee on Aging, Washington, DC, May 26, 2010, http://www.ftc.gov/os/testimony/
100526dietarysupplementstatement.pdf.
126 P.L. 103-417, §2.
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proof of safety and effectiveness are required prior to putting a product on the market). Whether
this is an appropriate level of regulation has been a long-standing concern. The general
framework for regulation of dietary supplements has remained largely unchanged since 1994,
when DSHEA was enacted, with some exceptions (e.g., mandatory serious adverse event
reporting, facility registration). However, since then, the dietary supplement market has grown,
and regulatory and research questions have become more complex. These questions continue to
reflect the fundamental balance between personal choice and safety. The following sections
discuss recent areas of regulatory and legislative concern, including the exclusion of certain drug
ingredients from the dietary supplement definition, issues surrounding supplement safety, and the
role of supplements in individuals’ health.
Dietary Supplements and Drug Exclusion
The definition of a dietary supplement explicitly excludes any article that is an active ingredient
in an approved drug, or that has been authorized for investigation as a new drug under an
investigational new drug application (IND).127 Although FDA could issue a regulation al owing
such an article to be used as or in a dietary supplement, to date, the agency has never issued such
a regulation for any article. This exclusion was intended, at least in part, to maintain incentives
for pharmaceutical companies to invest in clinical trials needed to obtain FDA approval of new
drugs. However, an article that is approved as a drug or being investigated as a drug may be
marketed in or as a dietary supplement if it was marketed as a dietary supplement or as a food
prior to its approval or clinical investigation—unless FDA issues a regulation to the contrary.128
According to FDA, this prior market clause “establishes a system for determining whether articles
wil be deemed dietary supplements or drugs, and regulated accordingly, depending on how such
articles were marketed and categorized when they first entered the marketplace.”129
In recent years, regulators, Congress, and stakeholders have proposed modifying the drug
exclusion provision, albeit for different reasons. For example, former FDA Principal Associate
Commissioner for Policy Lowel Schil er noted in his remarks during a meeting of the Council
for Responsible Nutrition (a dietary supplement trade association) that the drug exclusion
provision, at times, creates enforcement chal enges for FDA. Specifical y,
if a product is labeled as a dietary supplement, but it contains one of those same drug
substances, it may not actually be a dietary supplement at all. In such situations, there might
be other violations of the [FFDCA] that provide a clear path to removing the product from
the market. But establishing those violations can be tricky, depending on the circumstances.
For example, sometimes we see products that are marketed as dietary supplements with
express claims about treating impotence, but it turns out that the secret ingredient is
undisclosed sildenafil (i.e., Viagra). In such cases, the claims about impotence establish
that the product is intended for use as a drug, and classifying the product as an unapproved
new drug will be a fairly straightforward determination for us to make.
But other cases may be more complicated. For example, if a drug substance is mislabeled
as a dietary supplement, but there are no express claims, then depending on the facts, it
could be resource-intensive or otherwise challenging to determine the best path forward.

127 FFDCA §201(ff)(3)(B) [21 U.S.C. §321(ff)(3)(B)].
128 FFDCA §201(ff)(3)(A) [21 U.S.C. §321(ff)(3)(A)].
129 Docket No. FDA-2005-P-0259 (formerly Docket No. 2005P -0305), FDA response to Ms. Kathleen M. Sanzo, Esq.
Morgan, Lewis & Bockius LLP, January 12, 2009, p. 3.
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One way to help address this issue would be to move the drug substance exclusion out of
the definition of “dietary supplement,” and make it clear that the presence of such
substances in a dietary supplement renders the product an adulterated dietary supplement
– which would be in addition to any other potential violations. The universe of what could
be a lawful supplement wouldn’t change, but FDA would have a clear and direct way to
use our authorities over adulterated dietary supplements to move against these unlawful
and potentially dangerous products containing drug ingredients.130
Other stakeholders, as wel as some Members of Congress, also have proposed that the drug
exclusion provision should be modified, but to al ow for certain ingredients to be marketed in
dietary supplements, particularly with respect to the cannabis derivative cannabidiol (CBD). CBD
is a nonpsychoactive compound found in cannabis that has been marketed as a dietary supplement
and promoted as treatment for a range of conditions, including anxiety, pain, and post-traumatic
stress disorder. FDA has determined that because CBD is an active ingredient in an FDA-
approved drug (Epidiolex) and was under clinical investigation under an IND prior to its use in
dietary supplements, at this time, CBD cannot be marketed as a dietary supplement.131 FDA may
issue a regulation creating an exception for CBD, but the agency has never issued such a
regulation for any substance (see the text box below for additional information).
In determining whether amending the dietary supplement definition is appropriate, particularly
with respect to substances such as CBD, Congress may consider the potential for adverse health
effects and other unintended consequences. For example, clinical trials to support the approval of
Epidiolex demonstrated the potential for liver injury at certain doses, and CBD may interact with
other drugs or dietary supplements.132 Other concerns include the potential dosing and cumulative
effects of exposure to an ingredient from multiple sources (e.g., supplements and cosmetics);
whether there are populations for whom an ingredient is not appropriate (e.g., pregnant or
lactating women); and whether al owing an ingredient to be marketed as a supplement could
undermine incentives for conducting clinical trials and obtaining evidence of safety and
effectiveness.133 In addition, excepting one substance from the drug exclusion provision may set a
precedent for other substances in the future.
Cannabidiol and the 2018 Farm Bill
The 2018 farm bil (Agriculture Improvement Act of 2018, P.L. 115-334) removed cannabis and cannabis
derivatives that meet the definition of hemp (i.e., containing less than 0.3% concentration of delta-9
tetrahydrocannabinol [THC]) from the definition of marijuana in the Control ed Substances Act, effectively making
them no longer subject to regulation as control ed substances by the Drug Enforcement Administration (DEA).
However, the 2018 farm bil also explicitly preserved FDA’s authority under the FFDCA and Section 351 of the
Public Health Service Act, including for hemp-derived products. Since enactment of the farm bil , FDA has
maintained that it is unlawful to market CBD (or THC) as, or in, dietary supplements, regardless of whether they
are hemp-derived, citing the drug exclusion provision of the dietary supplement definition.

130 FDA, “Remarks by Lowell Schiller, JD at the Council for Respo nsible Nutrition Conference - 11/7/2019,”
https://www.fda.gov/news-events/speeches-fda-officials/remarks-lowell-schiller-jd-council-responsible-nutrition-
conference-1172019-11072019.
131 See question 9 in “FDA Regulation of Cannabis and Cannabis-Derived Products: Questions and Answers,” updated
April 2, 2019, https://www.fda.gov/news-events/public-health-focus/fda-regulation-cannabis-and-cannabis-derived-
products-questions-and-answers#dietarysupplements.
132 FDA, “What You Need to Know (And What We're Working to Find Out) About Products Containing Cannabis or
Cannabis-derived Compounds, Including CBD,” current as of March 5, 2020, https://www.fda.gov/consumers/
consumer-updates/what -you-need-know-and-what -were-working-find-out -about-products-containing-cannabis-or-
cannabis.
133 FDA, “Scientific Data and Information About Products Containing Cannabis or Cannabis-Derived Compounds;
Public Hearing; Request for Comments,” Federal Register, vol. 84, no. 64, 12969-12975, April 3, 2019.
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In providing its reasoning for this determination, FDA explains that in June 2018, the agency approved a new drug
application (NDA) for the prescription drug Epidiolex, submitted by GW Pharmaceuticals, for the treatment of
seizures associated with Lennox-Gastaut syndrome and Dravet syndrome in patients two years old and older. The
active ingredient in Epidiolex is CBD. FDA has determined that because CBD is an active ingredient in an FDA-
approved drug (Epidiolex) and was under clinical investigation under an IND prior to its use in dietary
supplements, at this time, CBD cannot be marketed as a dietary supplement. FDA may issue a regulation creating
an exception for CBD, but the agency has never issued such a regulation for any substance.
Despite FDA’s determination that marketing CBD as a dietary supplement is unlawful, these products remain on
the market. On November 14, 2019, the Consumer Healthcare Products Association (CHPA) submitted a citizen
petition to FDA, asking the agency to “exercise its statutory authority and discretion to engage in rulema king that
establishes a regulatory pathway to legal y market dietary supplements containing [CBD] derived from hemp (as
defined in 7 U.S.C. §1639o(1))” and to require that manufacturers of CBD-containing dietary supplements submit
NDI notifications. In the explanatory statement accompanying the enacted FY2020 appropriations, Congress
directed FDA to issue a policy of enforcement discretion with respect to CBD products that meet the def inition
of hemp, but the agency has not done so.
In the absence of FDA action, legislation has been introduced that would amend the dietary supplement definition
to except hemp-derived CBD and related substances from the drug exclusion provision of the dietary supplement
definition. Even if either of these provisions were to become law, CBD-containing supplements may stil be subject
to other FFDCA requirements. For example, to lawful y market a CBD product as a dietary supplement, a firm
may need to submit an NDI notification to FDA, in addition to meeting the other statutory and regulatory
requirements.
For additional information about CBD regulation, see CRS Report R46189, FDA Regulation of Cannabidiol (CBD)
Consumer Products: Overview and Considerations for Congress
, coordinated by Agata Bodie.
Dietary Supplement Safety
Regardless of the form or the reasons for which they are consumed, there is consensus that
dietary supplements consumed by Americans should be safe. There remains disagreement on how
to achieve the goals of safety. According to the 2014 FDA Health and Diet Survey, more than half
of vitamin and mineral supplement users reported thinking that the government preapproves these
products before they are marketed.134 While this is general y the case for drugs, it is not the case
for dietary supplements. Some stakeholders have raised that FDA’s ability to identify safety
concerns associated with dietary supplements is undermined by a lack of information that is
available for other regulated products, such as drugs.135
FDA and public health stakeholders have identified several limitations in FDA’s current authority
over dietary supplements. Among these limitations is that under the current statutory framework,
while entities that manufacture, process, pack, or hold supplements must register with FDA, the
agency is not authorized to require listing of individual dietary supplement products. As a result,
the agency is not aware of al the products currently on the market. FDA,136 Congress,137 and

134 FDA Center for Food Safety and Applied Nutrition, “2014 FDA Health and Diet Survey,” May 6, 2016, p. 15,
https://www.fda.gov/media/96883/download.
135 Pieter Cohen and Scott Bass, “Injecting Safety into Supplements—Modernizing the Dietary Supplement Law,” New
England Journal of Medicine
, December 19, 2019, vol. 381, no. 25, pp. 2387-2389. Bryan Denham, “Dietary
Supplements—Regulatory Issues and Implications for Public Health,” JAMA, vol. 306, no. 4 (July 27, 2011), pp. 428-
429. See also Dietary Supplem ents: FDA May Have Opportunities to Expand its Use of Reported Health Problem s to
Oversee Products
, GAO-13-244, March 2013, p. 1, http://www.gao.gov/products/GAO-13-244.
136 FDA, FY2021 Justification of Estimates for Appropriations Committees, p. 43, https://www.fda.gov/media/135078/
download. FDA, FY2020 Justification of Estimates for Appro priations Committees, p. 41, https://www.fda.gov/media/
121408/download.
137 See, for example, S. 1425 (113th Congress), the Dietary Supplement Labeling Act of 2013.
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some stakeholders138 have proposed establishing a product listing requirement for supplements,
similar to that which exists for drugs. According to the agency, “this would al ow FDA to know
when new products are introduced, quickly identify and act against dangerous or otherwise il egal
products, and improve transparency and promote risk-based regulation.”139 Some industry trade
groups have indicated support for FDA’s proposal, while others have expressed opposition,
cal ing it “redundant” and “unnecessary.”140
Another limitation concerns submission of NDI notifications to FDA, specifical y a reported lack
of industry compliance with submission of complete notifications, as wel as a so-cal ed loophole
in the current NDI framework. In its 2016 draft NDI guidance, the agency indicated that a goal of
the guidance was to improve the rate of compliance with the notification requirements,141 and
FDA has issued warning letters to manufacturers who may not be following the NDI
requirements. In FY2020, FDA responded to 43 NDI notifications, of which the agency
acknowledged 16 with no objection, deemed 9 to be incomplete, and raised safety or identity
concerns with 18.142
In addition to compliance chal enges, some stakeholders have proposed that legislative changes
are needed to require that safety data be submitted for al NDIs. Under current law, an NDI
notification is not required if the NDI was “present in the food supply as an article used for food
in a form in which the food has not been chemical y altered.”143 Some observers have referred to
this exception as a “loophole,” which al ows companies to circumvent the NDI notification
process.144 Specifical y, manufacturers reportedly are marketing ingredients as food in energy
bars or drinks pursuant to a GRAS determination, which does not require a notification to FDA.
Then, once the ingredient has been in the food supply for a few months, the manufacturer wil
market it in a dietary supplement as a dietary ingredient without submitting an NDI notification to
FDA.145
The Role of Dietary Supplements in Health and Health Care
Experts recommend that individuals meet their nutritional needs by eating a variety of foods, as
outlined in the 2020-2025 Dietary Guidelines for Americans, consistent with previous versions of

138 Pieter Cohen and Scott Bass, “Injecting Safety into Supplements—Modernizing the Dietary Supplement Law,” New
England Journal of Medicine
, December 19, 2019, vol. 381, no. 25, pp. 2387-2389. The Pew Charitable T rusts,
“Congress Should Prioritize Dietary Supplement Reform as Part of Its Efforts to Strengthen Public Health ,” April 22,
2021, https://www.pewtrusts.org/en/research-and-analysis/fact-sheets/2021/04/congress-should-prioritize-dietary-
supplement -reform-as-part-of-efforts-to-strengthen-public-health.
139 FDA, FY2021 Justification of Estimates for Appropriations Committees, p. 43, https://www.fda.gov/media/135078/
download.
140 Natural Products Insider, “ FDA, consumer groups in favor of mandatory listing of dietary supplement products,”
October 12, 2020, https://www.naturalproductsinsider.com/regulatory/fda-consumer-groups-favor-mandatory-listing-
dietary-supplement -products.
141 FDA, “Dietary Supplements: New Dietary Ingredient Notifications and Related Issues: Guidance for Industry, ”
Draft Guidance, p. 12.
142 FDA, FY2022 Justification of Estimates for Appropriations Committees, p. 69, https://www.fda.gov/media/149616/
download.
143 FFDCA §413(a)(1) [21 U.S.C. §350b(a)(1)].
144 Pieter Cohen and Scott Bass, “Injecting Safety into Supplements—Modernizing the Dietary Supplement Law,” New
England Journal of Medicine
, December 19, 2019, vol. 381, no. 25, pp. 2387-2389. Natural Products Inside, “ ‘GRAS
loophole’ rears head in FDA supplements letter,” August 12, 2021, https://www.naturalproductsinsider.com/regulatory/
gras-loophole-rears-head-fda-supplements-letter.
145 Ibid.
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the policy document.146 Some individuals take dietary supplements in order to meet those
nutritional goals. Surveys show that over half of al Americans take dietary supplements, and that
number has been increasing.147
Consensus has not been reached on the effectiveness of most dietary supplements, but privately
and publicly funded research is ongoing.148 Specific supplements, such as folic acid, have been
shown to greatly reduce the incidence of neural tube defects in infants; as a result of scientific
consensus, folic acid supplementation is now considered a vital component of prenatal care.149
Calcium supplementation is also often recommended by physicians for bone health, and FDA has
approved a health claim associating supplements containing calcium or calcium and vitamin D
with reduced risk of osteoporosis.150 Not al studies support this claim.151 In general, there is a
lack of peer-reviewed research on the effectiveness of many other supplements. For example, in
recent years, CBD has been promoted as a treatment for a range of conditions, including post-
traumatic stress disorder, anxiety, inflammation, and sleeplessness. However, limited scientific
evidence is available to substantiate or disprove the effectiveness of CBD in treating these
conditions.
Even if research were to support certain effectiveness claims for dietary supplements, as
mentioned, supplements may not be promoted for the treatment, cure, or prevention of a specific
disease or condition. Products that make such claims may be subject to FDA and FTC
enforcement action. For example, the agencies have issued warning letters to companies
marketing CBD supplements claiming to treat pain, cancer, diabetes, and Alzheimer’s disease.152
As FDA noted in its warning letters, the agency considers those products to be unapproved new
drugs “because they are intended for use in the diagnosis, cure, mitigation, treatment, or
prevention of disease, and/or intended to affect the structure or any function of the body.” The
agency further contends that al owing dietary supplements such as CBD to make therapeutic
claims may discourage individuals from seeking treatments that have been proven to be effective
and could undermine incentives for conducting clinical trials and obtaining evidence of safety and

146 USDA, HHS, “Dietary Guidelines for Americans, 2020-2025,” Washington, DC, December 2020,
https://www.dietaryguidelines.gov/sites/default/files/2020-12/Dietary_Guidelines_for_Americans_2020 -2025.pdf.
147 Suruchi Mishra, Bryan Stierman, Jaime J. Gahche, et al., “Dietary Supplement Use Among Adults: United States,
2017–2018,” National Center for Health Statistics (NCHS) Data Brief No. 399, February 2021, https://www.cdc.gov/
nchs/products/databriefs/db399.htm.
148 T he Office of Dietary Supplements at NIH, which funds dietary supplement research, was established under
DHSEA. For more information, see http://ods.od.nih.gov/.
149 For more information on folic acid, see http://www.cdc.gov/ncbddd/folicacid/index.html.
150 21 C.F.R. §101.71.
151 For more information on calcium, see NIH Office of Dietary Supplements, “Calcium: Fact Sheet for Health
Professionals,” updated August 11, 2021, https://ods.od.nih.gov/factsheets/Calcium-HealthProfessional/.
152 FT C, “FT C Joins FDA in Sending Warning Letters to Companies Advertising and Selling Products Containing
Cannabidiol (CBD) Claiming to T reat Alzheimer’s, Cancer, and Other Diseases,” April 2, 2019, https://www.ftc.gov/
news-events/press-releases/2019/04/ftc-joins-fda-sending-warning-letters-companies-advertising. FDA, “ FDA warns
15 companies for illegally selling various products containing cannabidiol as agency details safety concerns,”
November 25, 2019, https://www.fda.gov/news-events/press-announcements/fda-warns-15-companies-illegally-selling-
various-products-containing-cannabidiol-agency-details. FDA, “ FDA Warns Companies Illegally Selling Over-the-
Counter CBD Products for Pain Relief,” March 25, 2021, https://www.fda.gov/news-events/press-announcements/fda-
warns-companies-illegally-selling-over-counter-cbd-products-pain-relief.
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effectiveness for drug approval.153 Others have supported al owing dietary supplement
manufacturers to make claims that are general y permitted only for drugs.154
Many physicians and their patients are reported to have a limited understanding of dietary
supplement regulation, safety, and effectiveness, which may be compounded by the limited
availability of peer-reviewed medical research on the effects of dietary supplements.155 A 2010
report by the GAO found that consumers and medical professionals may be faced with a lack of
objective information on the safety and efficacy of certain types of dietary supplements, dietary
supplement ingredients, and potential side-effects or interactions with other medications.156 While
prescription medications can be accounted for in their medical record, patients may or may not
share information about their supplement intake with physicians. Additional y, some consumers
may have limited understanding of the information provided on dietary supplement marketing
materials.157 However, some physicians recommend dietary supplements to their patients based
on the available literature, and stil more patients take supplements based on their own research
and concerns.
The federal government and the dietary supplement industry have taken steps to address
consumer and health care provider understanding of dietary supplements through investment in
research and the promotion of industry standards.158 The NIH, FDA, and Department of Defense
also have created websites to provide consumers with dietary supplement information.159 The
NIH Office of Dietary Supplements also maintains two databases that provide information on
dietary supplements: the Dietary Supplement Ingredient Database (DSID) and the Dietary
Supplement Label Database (DSLD). The DSID provides estimated levels of ingredients in
commonly used nutrient-containing supplements (e.g., Vitamin D and omega-3 fatty acid
supplements), while the DSLD catalogs product labels.160 There are several limitations to both of
these databases. The DSID is intended primarily for research applications, particularly for use in
population studies of nutrient intake rather than for assessing content of individual

153 FDA, “FDA warns 15 companies for illegally selling various products containing cannabidiol as agency details
safety concerns,” November 25, 2019, https://www.fda.gov/news-events/press-announcements/fda-warns-15-
companies-illegally-selling-various-products-containing-cannabidiol-agency-details. FDA, “ Scientific Data and
Information About Products Containing Cannabis or Cannabis-Derived Compounds; Public Hearing; Request for
Comments,” Federal Register, vol. 84, no. 64, 12969-12975, April 3, 2019.
154 T hat is, to make claims that their products “diagnose, mitigate, treat, cure, or prevent a disease or specific class of
diseases” as long as that claim is supported by “legitimate scientific research” as defined in H.R. 1364, 112th Congress.
155 Bimal Ashar, T asha Rice, and Stephen Sisson, “Physicians’ Understanding of the Regulation of Dietary
Supplements,” Arch Int Med, vol. 167, no. 9 (2007), pp. 966-969.
156 GAO, Herbal Dietary Supplements: Examples of Deceptive or Questionable Marketing Practices and Potentially
Dangerous Advice
, 10-662T , March 2010, http://www.gao.gov/assets/130/124769.pdf.
157 Ibid.
158 For more information on government manufacturing standards for dietary supplements, see the on “Current Good
Manufacturing Practices”
section of this report . For examples of proposed or adopted industry standards, see the
American Herbal Products Association (www.ahpa.org), the Natural Products Association (www.npainfo.org), and the
Council for Responsible Nutrition (www.crnusa.org).
159 For example, see NIH’s Office of Dietary Supplements webpage, http://ods.od.nih.gov/; FDA’s webpage,
“Information for Consumers on Using Dietary Supplements,” https://www.fda.gov/food/dietary-supplements/
information-consumers-using-dietary-supplements; and DOD’s Human Performance Readiness Center, http://hprc-
online.org/.
160 NIH and the U.S. Department of Agriculture (USDA), “ Dietary Supplement Ingredient Database,”
https://dietarysupplementdatabase.usda.nih.gov/. NIH, “ T he Dietary Supplement Label Database:
https://ods.od.nih.gov/Research/Dietary_Supplement_Label_Database.aspx .
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supplements.161 The DSID also lacks information on other supplement ingredients that may be of
public health concern, such as weight-loss products.162 The DSLD, on the other hand, contains
more than 100,000 labels. The information is sourced from products reported in national
population-based surveys and voluntary submissions by dietary supplement manufacturers. The
information is taken from manufacturers’ printed labels, which may not comply with FDA
labeling requirements.163 Further, the database does not provide information about the amounts of
specific ingredients if a proprietary blend is listed on the label as an ingredient.
As discussed in the “Dietary Supplement Safety,” section of this report, there is no mandatory
reporting mechanism through which dietary supplement manufacturers must register their
products, although FDA, Congress, and some stakeholders have supported creating such a
requirement. Some stakeholders have proposed that in addition to product listing, manufacturers
should be required to submit al product labels to FDA to enhance transparency and FDA’s ability
to take action against unsafe products.164
Concluding Comments
Consumers, the health care and dietary supplement industries, Congress, and federal regulators al
have a stake in supplement identification, effectiveness, and safety. Research into the
effectiveness and safety of supplements, industry compliance, surveil ance and effective reporting
strategies, and enforcement of current authorities are perennial concerns in this area.
With each legislative and regulatory action over the years, Congress and FDA have tried to
balance often conflicting goals:
 safety;
 access to up-to-date, complete, and unbiased information on dietary supplements;
 accurate reporting of adverse events; and
 consumer choice.
Congress has demonstrated a sustained interest in dietary supplement related issues. It is
uncertain if the 117th Congress wil consider any new dietary supplement related legislation. Such
issues may arise in the broader context of congressional interest in nutrition and food safety.

161 NIH and USDA, “ Dietary Supplement Ingredient Database,” https://dietarysupplementdatabase.usda.nih.gov/.
162 Johanna Dwyer and Paul Coates, “Why Americans Need Information on Dietary Supplements,” Journal of
Nutrition
, August 2018, vol. 148, iss. supplement 2, pp. 1401S-1405S.
163 Johanna Dwyer, Richard Bailen, Leila Saldanha, et al., “ T he Dietary Supplement Label Database: Recent
Developments and Applications,” Journal of Nutrition, August 2018, vol. 148, iss. supplement 2, pp. 1428S-1435S.
164 Pieter Cohen and Scott Bass, “Injecting Safety into Supplements—Modernizing the Dietary Supplement Law,” New
England Journal of Medicine
, December 19, 2019, vol. 381, no. 25, pp. 2387-2389.
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Appendix A. Selected Laws Regulating
Dietary Supplements

Federal Food, Drug, and Cosmetic Act (P.L. 75-717)
The FFDCA provides FDA with the authority to oversee the safety of food, drugs, and cosmetics.
Nutrition Labeling and Education Act of 1990 (P.L. 101-535)
The Nutrition Labeling and Education Act (NLEA) amended the FFDCA to require most foods,
including dietary supplements, to bear nutrition labeling. It specified required information for
labels and required the FDA to promulgate regulations regarding nutrition labeling and health
claim requirements for foods and dietary supplements.
To Amend the Federal Food, Drug, and Cosmetic Act to Authorize
Human Drug Application, Prescription Drug Establishment, and
Prescription Drug Product Fees and for Other Purposes (P.L. 102-
571)
Title II is the “Dietary Supplement Act of 1992,” which required a one-year moratorium on
FDA’s implementation of dietary supplement labeling under NLEA.
Dietary Supplement Health and Education Act of 1994 (P.L. 103-
417)
The Dietary Supplement Health and Education Act (DSHEA) amended the FFDCA to create new
manufacturing and labeling requirements for dietary supplements, and established the Office of
Dietary Supplements within the National Institutes of Health.
Public Health Security and Bioterrorism Preparedness and
Response Act of 2002 (P.L. 107-188)
This law required the registration of any facility manufacturing, processing, packing, or holding
food (including dietary supplements).
Dietary Supplement and Nonprescription Drug Consumer
Protection Act (P.L. 109-462)
This law mandates the reporting of any dietary supplement related serious adverse event to the
FDA within 15 days of the event. Serious adverse event reporting is mandatory for manufacturers,
packers, or distributors whose name appears on the dietary supplement label.
FDA Food Safety Modernization Act (P.L. 111-353)
FSMA provides FDA with mandatory recal authority for food, including dietary supplements.
This law also required FDA to issue NDI guidance no later than 180 after its enactment.
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Appendix B. Principal Display Panel,
Dietary Supplements

Figure B-1. Example of a Dietary Supplement Principal Display Panel

Source: National Institutes of Health, Dietary Supplements Labels Database at the National Library of Medicine,
accessed May 2013, drawing from I Love Lucy and Our Miss Brooks.
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Appendix C. Acronyms Used in This Report
Government Agencies
CDC—Centers for Disease Control and Prevention
CFSAN—Center for Food Safety and Applied Nutrition, Office of Foods, FDA
DEA—Drug Enforcement Administration
DOD—Department of Defense
FDA—U.S. Food and Drug Administration
FTC—Federal Trade Commission
GAO—U.S. Government Accountability Office
HHS—U.S. Department of Health and Human Services
NIH—National Institutes of Health
OIG—Office of the Inspector General, U.S. Department of Health and Human Services
Legislation
DSHEA—Dietary Supplement Health and Education Act of 1994
FDAMA—FDA Modernization Act
FFDCA—Federal Food, Drug, and Cosmetics Act
FSMA—FDA Food Safety Modernization Act of 2011
NLEA—Nutrition Labeling and Education Act of 1990
Miscellaneous
CFR—Code of Federal Regulations
CAERS—CFSAN Adverse Event Reporting System
CGMP—Current Good Manufacturing Practices
GRAS—General y Recognized as Safe
NDI—New Dietary Ingredient
SSA—FDA’s Significant Scientific Agreement Standard for approved health claims
IND—Investigational New Drug

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Author Information

Agata Bodie

Analyst in Health Policy


Acknowledgments
Amalia Corby-Edwards, former CRS Analyst in Public Health and Epidemiology, prepared the original
version of this report
Ada Cornell, CRS Information Research Specialist, and Jaime Hastings, visiting intern, contributed to the
original version of this report.

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