Supplement Facts panel

The Supplement Facts panel is the mandatory information panel — required on the principal display panel or information panel of every dietary supplement — that lists serving size, servings per container, dietary ingredients per serving, the % Daily Value (DV) where one has been established, and any 'other ingredients' (excipients, processing aids, capsule shell components) outside the boxed panel. It is governed by 21 CFR 101.36, which is structurally a child of the food-labelling rule 101.9 but has its own ordering, its own type-size table, and a unique disclosure exception (proprietary blends) that does not exist for conventional foods.

FDA created the Supplement Facts panel in 1997 (62 FR 49826) because dietary supplements declare ingredients that conventional foods do not — botanicals, amino acids, single nutrient concentrates, blends — and because the supplement category is allowed to declare ingredients for which no Daily Value has been established. A product labelled with the Nutrition Facts panel format when it is in fact a dietary supplement is misbranded under FD&C Act §403(q), and FDA has issued Warning Letters on this single defect.

1. Heading 'Supplement Facts' (101.36(e)(1) — bold, larger than the largest type in the panel).
2. Serving size and (if applicable) servings per container (101.36(b)(2)).
3. Quantitative amounts of dietary ingredients per serving, in the order: (i) DV-bearing nutrients in 101.9 column order, (ii) other dietary ingredients with no DV, (iii) proprietary blends (101.36(b)(3)(iv)).
4. %DV column for ingredients where a DV exists (vitamins, minerals, protein, fibre, total fat, sodium, etc.); dagger (†) for those without.
5. Source identification (botanical Latin binomial + plant part; chemical form for nutrients).
6. Footnote: '% Daily Values are based on a 2,000 calorie diet' (only if a DV % is shown that depends on caloric reference).
7. 'Other ingredients' statement, OUTSIDE the box, listing excipients in descending order by weight (101.36(i)).

FDA finalised the revised Nutrition and Supplement Facts label rule on 27 May 2016 (81 FR 33741). The DRV/RDI table used to compute %DV was rebuilt against current NHANES intake data and the 2010-era Institute of Medicine DRIs. The most consequential changes for supplements:

• Vitamin A: from International Units (IU) to micrograms of retinol activity equivalents (mcg RAE). 1 mcg RAE = 1 mcg retinol = 12 mcg β-carotene from foods.
• Vitamin D: IU → micrograms (mcg). 40 IU = 1 mcg. DV raised from 400 IU to 800 IU (20 mcg).
• Vitamin E: IU → milligrams of α-tocopherol. The conversion depends on isomer (natural d- vs synthetic dl-).
• Folate / folic acid: Daily Value now in micrograms of dietary folate equivalents (mcg DFE).
• Niacin, vitamin B6, B12, biotin, pantothenic acid, choline, chromium, molybdenum, chloride — many DVs adjusted.
• New mandatory declarations: added sugars on foods (rarely applicable to supplements but inherited via 101.9 cross-references).

Compliance deadlines were 1 January 2020 (large manufacturers) and 1 January 2021 (sales <$10M). Old-format panels in distribution after those dates are misbranded. Contract co-packers occasionally ship surplus old-format stock — your incoming-label artwork-approval workflow must reject IU-only vitamin A/D/E declarations on sight.

21 CFR 101.9(g) (cross-referenced by 101.36(f)) defines two classes of nutrient:

• Class I (added nutrients in fortified products, including most supplements): the analytical assay value must be ≥100 % of the label claim.
• Class II (naturally occurring nutrients): assay value must be ≥80 % of the label claim.
• There is no upper bound in 101.9(g) for either class — but the upstream cGMP rule 21 CFR 111.70(e) still requires a finished-product specification with an upper bound (typical industry practice is 100–150 % of label claim, narrower for stimulants, hormones, and acutely-toxic nutrients).

This is the arithmetic basis for the 'overage' added at manufacturing: the formula charges more than 100 % of label claim so that, after losses (degradation over shelf life, manufacturing yield, sampling variance), the assay at any point in distribution lands ≥100 %. See the overage entry for the calculation walk-through.

21 CFR 101.36(c) allows a 'proprietary blend' line: the total weight of the blend is declared, and the constituent ingredients are listed in descending order of predominance, but individual amounts can be withheld as trade secret. Three failure modes recur in Warning Letters:

• Ingredients listed not in descending order — automatic 403(a)(1) misbranding finding.
• An ingredient with an established DV (e.g. vitamin B6, magnesium) declared only inside the blend — DV-bearing nutrients must still be broken out individually with their %DV.
• Caffeine, beta-alanine, or other actives buried in the blend below the disclosed total weight — class-action plaintiffs use third-party assay to 'amount-spike' lawsuits.

Retailer policies (Costco, Walmart, Amazon, Whole Foods) increasingly require full amount disclosure even when 101.36(c) permits a blend. Build your master label artwork on the strictest retailer's rules and the FDA position becomes a non-issue.

21 CFR 101.36(b)(3)(ii)(A) requires a botanical dietary ingredient to be declared with: (1) common or usual name, (2) Latin binomial (the scientific name from Herbs of Commerce 2nd edition or equivalent), and (3) the plant part used. 'Echinacea 250 mg' is not lawful; 'Echinacea purpurea (aerial part) 250 mg' is. Common 483 patterns: missing plant part, wrong binomial (Echinacea purpurea vs angustifolia vs pallida have different actives), and the Latin name typeset without italics — the regulation is silent on italics but FDA reviewers comment on it.

21 CFR 101.36(e) inherits the format requirements of 101.9(d): boxed panel with hairline rules, bold 'Supplement Facts' heading at least 13 pt (small packages: 10 pt), 'Serving size' bolded, 6 pt minimum body text, light/dark contrast preserved. Small-package variants (101.36(i)) allow simplified format and reduced type for surface areas <12 sq in or <40 sq in. Modified formats for unit-dose containers and gift packs are described in 101.36(j).

21 CFR 111.70(e) requires the manufacturer to establish a finished-product specification for the identity, purity, strength, and composition of the dietary supplement. The declared amount on the Supplement Facts panel is the 'strength' end of that specification. The reconciliation chain — required to survive an FDA Form 483 inspection — is:

1. Label artwork (approved revision number) → claims a specific amount per serving.
2. Master Manufacturing Record (111.210) → encodes the formula and overage that delivers that amount.
3. Batch Production Record (111.260) → records actual charges of each component lot.
4. Identity test (111.75) → confirms each dietary ingredient lot is what the label says it is.
5. Finished-product assay (111.75(d) / 111.320) → confirms the lot meets the strength spec.
6. QC unit disposition (111.123(b)) → releases the lot for distribution.

A single missing link in that chain — most commonly the identity test or the finished-product assay — converts every unit of the released lot into adulterated or misbranded product.

• Label artwork stored as an asset with revision + approval e-sig; the active revision is the one the MMR is tied to.
• MMR encodes label_claim_per_serving + overage_pct + finished_assay_lower + finished_assay_upper per ingredient.
• Kiosk dispense charges drive from (label_claim × overage × batch_size / potency_factor) — the calculation is e-signed.
• Finished-product release is hard-blocked if assay <100 % (Class I) or >upper spec.
• Label Reconciliation PDF (regulated-reports bucket) bundles panel image + per-ingredient assay + identity test + component lot IDs.