vitamin
Niacin supplements
Half of the 12,413 niacin supplements in the NIH label database that print an amount list 20 mg or less per serving; the middle half list 13.2 mg to 48 mg, and 35% of the 12,334 with a plausible amount give more than the adult upper limit at the most servings their labels direct (DSLD version 9.4.0, January 2026). The 295 products whose only supplement ingredient is niacin list a median of 500 mg, and 98% of them give more than the upper limit.
- Products listing it
- 12,77912,413 print an amount; 359 list it inside a blend without an amount
- Median per serving
- 20 mgmiddle half 13.2 mg to 48 mg
- FDA Daily Value
- 16 mgthe median is 125% of it
- Adult upper limit (IOM)
- 35 mg4,377 products go above it a day
How much niacin do supplements contain?
The median product lists 20 mg per serving. One in ten lists 5 mg or less, one in ten 100 mg or more. The amount printed most often is 20 mg (2,521 products).
Products by amount of niacin per serving
12,413 products, log scale; extreme 0.2% at each end left out of the drawing.
Source: Supplement Facts rows of every product's current label, NIH ODS Dietary Supplement Label Database version 9.4.0; amounts in one measure (weight).
How do the amounts compare with the Daily Value and the upper limit?
The FDA Daily Value for niacin is 16 mg (adults and children 4 and older). The median product gives 125% of it per serving; the 90th percentile 625%.
The adult Tolerable Upper Intake Level is 35 mg a day (synthetic forms from supplements and fortified foods). At the most servings their labels direct, 4,377 of the 12,334 products with a plausible amount (35.5%) give more than that from the supplement alone (what counts as plausible).
The upper limit is for total intake from food, water and supplements unless stated, and does not apply under medical supervision. A label amount is what the maker printed. This is data, not advice: the NIH ODS fact sheets explain what each nutrient does.
Sources: 21 CFR 101.9(c)(8)(iv) (Daily Values); Institute of Medicine, DRI summary tables (2011) (upper limits); on reading them, the FDA's Daily Value page.
Which products list the most niacin?
On-market products, per serving, with a plausible amount: the rule leaves out likely entry slips, such as an amount far beyond every other label with no %DV or strength on the label to back it (each product page still shows its own amount, marked).
- NiaPlexKaruna1,000 mg
- Hb HDL BenefitPRN Physician Recommended Nutriceuticals1,000 mg
- Vitamin B3 Niacin 1000 mgLife Extension1,000 mg
- Niacinamide 1,000 mgNature's Life1,000 mg
- Memory BoostHighland Laboratories1,000 mg
- Timed Release Niacin 100 mgRugby1,000 mg
- First Step VitaminsVitalBulk1,000 mg
- Niacin 1000 mgVitalBulk1,000 mg
Have the amounts changed over the years?
Products whose current label entered DSLD in 2011 list a median of 26 mg; those entered in 2025, 20 mg.
| Year | Products | Median per serving |
|---|---|---|
| 2011 | 287 | 26 mg |
| 2012 | 850 | 25 mg |
| 2013 | 1,066 | 20 mg |
| 2014 | 648 | 20 mg |
| 2015 | 635 | 20 mg |
| 2016 | 566 | 20.2 mg |
| 2017 | 637 | 25 mg |
| 2018 | 565 | 20 mg |
| 2019 | 679 | 20 mg |
| 2020 | 1,065 | 20 mg |
| 2021 | 1,006 | 20 mg |
| 2022 | 1,181 | 20 mg |
| 2023 | 997 | 20 mg |
| 2024 | 1,185 | 20 mg |
| 2025 | 1,046 | 20 mg |
Source: DSLD label entry dates and amounts, current labels.
In which products and brands?
Products listing niacin by DSLD product type
Brands listing it most: Douglas Laboratories (253), Nature's Way (232), Nature's Plus (208), Bronson (96), Cellucor (92), Country Life (86), NOW (81), ProCaps Laboratories (79), Metagenics (78), Rainbow Light (75).
Every product listing niacin
12,779 products, A to Z by name (page 93 of 256), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Hair, Skin And NailsDoctor's Best25 mg
- Hair, Skin and NailsThe Vitamin Shoppe50 mg
- Hair, Skin And NailsRexall25 mg
- Hair, Skin and Nails Formula with Biotin & KeratinWell At Walgreens25 mg
- Hair, Skin And Nails With AntioxidantsDG Health25 mg
- Hair, Skin, & Nail essentialsHealthy Choice Naturals5 mg
- Hair, Skin, & NailsUltimate Nutrition8 mg
- Hair, Skin, and Nail ResilienceProgressive Professional from Progressive Laboratories9 mg
- Hair/Skin/Nails UltraPure Encapsulations20 mg
- HairAnewNaturenetics25 mg
- HairfinityBrock Beauty5 mg
- HairFlairNutraChamps5 mg
- HairfluenceZHOU5 mg
- HairOmega 3-in-1Dr. Formulas · off the market30 mg
- HairOmega 3-in-1DrFormulas30 mg
- HairOmega DHTDrFormulas25 mg
- HairstrengthHigh Level250 mg
- HAIRtamin Advaned FormulaHAIRtamin2.5 mg
- HairvanaGiant Sports International5 mg
- HairVit H3Laboratorios Lopez · off the market25 mg
- HairXcelNutracraft · off the market30 mg
- Hammer X-pressoMonster20 mg
- Hangover FormulaSource Naturals75 mg
- Happiness 1-2-3!Roex40 mg
- HappyThe Enclare Nutrition20 mg
- Happy DayzChaotic Labz50 mg
- Hard Whey Hydro 4Chaotic-Labzin a blend
- Hard-AFSteel50 mg
- Hardcore MultivitaminGNC Beyond Raw50 mg
- Harmony Formula 650 mgFull Life20 mg
- Hb HDL BenefitPRN Physician Recommended Nutriceuticals1,000 mg
- HBP Rx SupportVinco · off the market10 mg
- HBP Script SupportVinco10 mg
- hc3 trim Active ComplexNuMedica2 mg
- HCF Happy, Calm, FocusedHCF Happy, Calm, Focused6 mg
- HCF Happy, Calm, Focused F&Q Regular StrengthHCF Happy, Calm, Focused6 mg
- hCG 1234Creative Bioscience · off the market0.0005 mg as transcribed, likely a slip
- hCG ActivatorBiomedx Research16 mg
- HCG Lean 2000 PlusMaritzMayer Laboratories · off the market2 mg
- HCG Lean 4000 PlusMaritzMayer Laboratories · off the market2 mg
- HCG RemedyEssential Sourcein a blend
- HCG Synergy Cinnamon FlavoredOfficial HCG Diet Plan10 mg
- HDL AssistEnzymatic Therapy · off the market20 mg
- HDL AssistNature's Way20 mg
- HDL BoosterEnzymatic Therapy · off the market20 mg
- Hdl RxIntegrative Therapeutics20 mg
- HeadacheFreeHeadache Free20 mg
- HealthPakUSANA20 mg
- Healthy Aging MultiVitamer Laboratories20 mg
- Healthy Blood FlowTerry Naturally20 mg