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 37 of 256), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Brain BoosterRainbow Nutrients · off the market12.5 mg
- Brain Booster UltraRomeo Health12.5 mg
- Brain Cell Respirator PlusBioactive Nutritional50 mg
- Brain ChargeSource Naturals50 mg
- Brain DriveMomentous20 mg
- Brain FactorsThorne415 mg
- Brain FoodSNAP10 mg
- Brain Formula Neuro PlusMillecor12.5 mg
- Brain FuelP2Life20 mg
- Brain FuelTropical Oasis · off the market20 mg
- Brain GoddessWarp Wellness12.5 mg
- Brain MoodDouglas Laboratories25 mg
- Brain NutrientsHigher Nature20 mg
- Brain PlusArazo Nutrition12.5 mg
- Brain Power StackHost Defense Mushrooms50 mg
- Brain SelectMoss Nutrition400 mg
- Brain SupportNatures Plus AgeLoss · off the market4 mg
- Brain SupportEnvy Nutrition12.5 mg
- Brain SupportNaturesPlus AgeLoss4 mg
- Brain Support Supplement 1000 mgNature's Nutrition12.5 mg
- Brain Total HealthMartin Avenue Pharmacy120 mg
- Brain VitaminsBuilt By Nature12.5 mg
- Brain WellnessBio Nutrition25 mg
- BrainAidNutriCology17.5 mg
- BrainolConsumer Health10 mg
- BrainSpeed MemoryNatrol125 mg
- BrainStormAllergy Research Group17.5 mg
- BrainSustain Creamy ChocolateXYMOGEN EP · off the market200 mg
- BrainSustain Creamy ChocolateXYMOGEN200 mg
- BrainSustain Vanilla DelightXYMOGEN EP · off the market200 mg
- BrainSustain Vanilla DelightXYMOGEN200 mg
- Brazilian DietFDC Vitamins LLC · off the market20 mg
- Breathe-EZOL Olympian Labs20 mg
- Brewer's YeastVitamin World0.3 mg
- Brewer's YeastGood 'N Natural · off the market0.24 mg
- Brewer's YeastNature's Answer1.4 mg
- Brewer's YeastThe Vitamin Shoppe1.17 mg
- Brewer's Yeast 1000 mgSpring Valley0.24 mg
- Brewer's Yeast 500GNC · off the market1.2 mg
- Brewer's Yeast 500 mgGNC · off the market1.2 mg
- Brewer's Yeast 500 mgSwanson Premium Brand · off the market0.3 mg
- Brewer's Yeast 500 mgAN Amazing Nutrition Amazing Formulas0.24 mg
- Brewer's Yeast 500 mgBest Naturalsin a blend
- Brewer's Yeast 500 mgPure Naturals0.24 mg
- Brewer's Yeast 680 mgMajor0.96 mg
- Brewer's Yeast 7 1/2 grainVitamin World · off the market0.3 mg
- Brewer's Yeast 7 1/2 Grains With Vitamin B 12Solgar · off the market0.72 mg
- Brewer's Yeast 7 1/2 grains with Vitamin B12Solgarin a blend
- Brewer's Yeast FlakesBluebonnet Super Earth · off the market5 mg
- Brewer's Yeast FlakesBluebonnet5 mg