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 87 of 256), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Ginkgo 120 plus Ginseng 200ProCaps Laboratories10 mg
- Ginkgo 120 plus Ginseng 200ProCaps10 mg
- Ginkgo Biloba 120ProCaps Laboratories5 mg
- Ginkgo Biloba 120ProCaps5 mg
- Ginseng 200ProCaps Laboratories5 mg
- Ginseng 200ProCaps5 mg
- Ginseng 40.0Shot-B · off the market25 mg
- Girl Multi Berry Melon BestiesOLLY · off the market8 mg
- Glan-Plus-FNutri-West50 mg
- GlowEu Natural9 mg
- Glow Collagen Cherry BerryAdvocare20 mg
- GlowModeEvlution Nutrition5 mg
- Gluco ComplexBioCare25 mg
- Gluco Total HealthMartin Avenue Pharmacy120 mg
- Gluco-FactorsMetagenics25 mg
- Gluco-ResponseNuMedica100 mg
- Gluco-ScienceSource Naturals66 mg
- Gluco-Support FormulaDouglas Laboratories90 mg
- Gluco-Syn-AmineBiotics Research Corporation20 mg
- GlucoBalanceBiotics Research Corporation150 mg
- GlucoformGlobal Enzyme · off the market4.3 mg
- GlucofortJustified Laboratories2.5 mg
- Glucofort MaxJustified Laboratories50 mg
- GlucoManage FormulaTriVita30 mg
- GlucomannanOfficial HCG Diet Plan40 mg
- GlucomannanInfiniti Creations40 mg
- GlucoPackDouglas Laboratories100 mg
- GlucoPerfectNutra Perfect · off the market20 mg
- GlucoPlexKaruna1,200 mg as transcribed, likely a slip
- Glucose Metabolism SupportPhysioLogics · off the market10 mg
- Glucose OptimizerJarrow Formulas150 mg
- Glucose ReduceMedix Select12.5 mg
- Glucose SupportVitabase25 mg
- Glucose ToleranceAllergy Research Group50 mg
- GlucostabilEcological Formulas15 mg
- GlucostatinMBi Nutraceuticals70 mg
- GlucoTone Plus ChromiumBioGenesis Nutraceuticals · off the market22 mg
- GlucotrustJustified Laboratories2.5 mg
- Glucotrust MaxJustified Laboratories50 mg
- Gluta-Tren Orange CremeProMera Sports · off the market25 mg
- Gluta-Tren WildberryProMera Sports · off the market25 mg
- GlutaClearMetagenics750 mg
- GlutaGen OrangeRSP20 mg
- Glutamate Scavenger/Calming FormulaMethylGenetic Nutrition by Professional Health Products10 mg
- Glutathione Force IIGet Healthy Again8 mg
- Gluten Free & Raw Wheat Grass PowderAmazing Grass · off the market0.6 mg
- GlutenAssure MultivitaminPure Encapsulations20 mg
- GLY ForteGenestra Brands135 mg
- Glycemic ManagerIntegrative Therapeutics37 mg
- Glyco - LyphNutri-West500 mg