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 44 of 256), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Centrum Men's MultiCentrum18 mg
- Centrum minis Adults 50+Centrum20 mg
- Centrum Minis Men 50+Centrum20 mg
- Centrum Minis Women 50+Centrum14 mg
- Centrum Multi + Omega-3 Men 50+Centrum20 mg
- Centrum Multi + Omega-3 Women 50+Centrum14 mg
- Centrum Multi + Probiotics Adults 50+Centrum14.4 mg
- Centrum MultiGummies AdultsCentrum3.2 mg
- Centrum MultiGummies Adults Assorted Natural Fruit FlavorsCentrum3.2 mg
- Centrum MultiGummies Men Assorted Natural Fruit FlavorsCentrum3.2 mg
- Centrum Silver Adults 50+Centrum20 mg
- Centrum Silver Adults 50+GSK20 mg
- Centrum Silver Chewables Adults 50+ Citrus BerryCentrum12 mg
- Centrum Silver Chewables Citrus BerryCentrum12 mg
- Centrum Silver Men 50+Centrum20 mg
- Centrum Silver Men 50+GSK20 mg
- Centrum Silver Plus VisionCentrum20 mg
- Centrum Silver Women 50+Centrum14 mg
- Centrum Silver Women 50+GSK14 mg
- Centrum Specialist EnergyCentrum40 mg
- Centrum Specialist Energy MultivitaminCentrum40 mg
- Centrum Specialist HeartCentrum10 mg
- Centrum Specialist Heart MultivitaminCentrum10 mg
- Centrum Specialist PrenatalCentrum18 mg
- Centrum Specialist VisionCentrum20 mg
- Centrum Stress & MoodCentrum4 mg
- Centrum VitaMintsCentrum2 mg
- Centrum VitaMints RaspberryCentrum2 mg
- Centrum VitaMints WintergreenCentrum2 mg
- Centrum WomenCentrum14 mg
- Centrum Women Under 50Centrum14 mg
- Centrum Women's MultiCentrum16 mg
- CenturySafeway Care20 mg
- Century AdultSmart Sense20 mg
- Century AdultsSignature Care20 mg
- Century CompleteTop Care20 mg
- Century Complete Multivitamin/Multimineral SupplementEqualine20 mg
- Century FormulaSwanson Premium Brand · off the market20 mg
- Century Formula Without IronSwanson Premium Brand · off the market20 mg
- Century MatureSmart Sense20 mg
- Century MatureGoodSense20 mg
- Century MatureSignature Care20 mg
- Century MatureMeijer20 mg
- Century menSignature Care16 mg
- Century Men'sEqualine16 mg
- Century Senior 50+ FormulaSafeway Care20 mg
- Century Senior Ultimate Men'sTop Care20 mg
- Century Ultimate Men'sTop Care16 mg
- Century Ultimate Men's Senior FormulaSafeway Care20 mg
- Century Ultimate Women'sTop Care14 mg