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 79 of 256), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Female EnergyVitarol · off the market20 mg
- Female EnhancementBaby Bean1 mg
- Female FertilityNature's Craft10 mg
- Female Libido EnhancerOweli1 mg
- Female Libido SupportHerSolution20 mg
- Female LongevityVitarol · off the market20 mg
- Female MultinutrientBioCare50 mg
- Female MultipleSolgar60 mg
- Female Reproductive FactorsMNP Michael's Naturopathic Programs50 mg
- Female Reproductive FactorsMichael's Naturopathic Programs100 mg
- Female Reproductive FactorsMH Michael's Health Naturopathic Programs50 mg
- Female Super PackDouglas Laboratories75 mg
- Female TotalityAdvanced Nutrition by Zahler16 mg
- Feminene Female Support FormulaMarket America20 mg
- Feminene Female Support FormulaPrime20 mg
- Feminyl +BioPerineApproved Science15 mg
- FemOneMetabolic Maintenance25 mg
- FemOne PlusMetabolic Maintenance25 mg
- Femteen SymmetryVitanica15 mg
- FeotronDC5 mg
- Fermented Coenzyme B ComplexNew Chapter45 mg
- Fermented Vitamin B ComplexNew Chapter16 mg
- Feroglobin Liquid OriginalVitabiotics16 mg
- Ferro-CDouglas Laboratories · off the market30 mg
- FerrogenDNA Dynamic Nutritional Associates30 mg
- Ferronyl IronDouglas Laboratories30 mg
- Ferronyl with Vitamin CDouglas Laboratories · off the market30 mg
- Ferrous-Fumuro ChelateNutri-West15 mg
- FertilAid for MenFairhaven Health20 mg
- FertilAid for WomenFairhaven Health20 mg
- Fertile One PC 600Coast Science40 mg
- Fertile One PCOS 600Coast Science40 mg
- Fertile One Prenatal PlusCoast Science17 mg
- FertileDetoxFairhaven Health · off the market2 mg
- FertileDetox for Women and MenFairhaven Health2 mg
- FertileTonicHerbTonics · off the market10 mg
- Fertilisyl +BioPerineApproved Science15 mg
- FertilityPink Stork10 mg
- Fertility BoosterNature's Craft20 mg
- FH PRO for MenFairhaven Health20 mg
- FH PRO for WomenFairhaven Health40 mg
- Fiber Good Gummies plus Energy SupportBayer Phillips'20 mg
- Fiber Good Gummies plus Metabolism SupportBayer Phillips'20 mg
- Fiber Well Fitvitafusion10 mg
- Fiber Well Fit Sugar Free Gummiesvitafusion · off the market10 mg
- Fiber-Tastic!Renew Life0.45 mg
- Fibo-TrimAdvoCare12 mg
- Fibro EssentialsSwanson Condition Specific Formulas · off the market25 mg
- Fibro-ResponseSource Naturals50 mg
- FierceAB Combination · off the market19 mg