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 24 of 256), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- B-100 CapsNOW · off the market100 mg
- B-100 ComplexPhysioLogics · off the market100 mg
- B-100 ComplexNutraBio100 mg
- B-100 ComplexExchange Select · off the market100 mg
- B-100 ComplexNatrol100 mg
- B-100 ComplexVitacost100 mg
- B-100 ComplexBest Naturals100 mg
- B-100 ComplexNature Made100 mg
- B-100 ComplexCVS Health100 mg
- B-100 Complex21st Century100 mg
- B-100 ComplexNature's Way100 mg
- B-100 Complex 1000 mgRemedys Nutrition100 mg
- B-100 Complex Extra StrengthBuilt By Nature20 mg
- B-100 Complex Timed ReleaseExchange Select100 mg
- B-100 Complex with B2 CoenzymeNature's Way · off the market100 mg
- B-100 Complex With Folic AcidRadiance Select100 mg
- B-100 Full Spectrum B-ComplexNutraBio100 mg
- B-100 GelCarlson · off the market100 mg
- B-100 GelsCarlson100 mg
- B-100 Ultra B-ComplexNature's Bounty100 mg
- B-100 Ultra B-ComplexGood 'N Natural · off the market100 mg
- B-12Choice Nutrition Supplements · off the market20 mg
- B-12iPro Organic Supplements · off the market20 mg
- B-12 10,000 mcg Energy Boost Mixed BerryNOW Shots50 mg
- B-12 10,000 mcg Mixed BerryNOW Shots50 mg
- B-12 PowAM Angstrom Minerals20 mg
- B-125Source Naturals125 mg
- B-125 ComplexSwanson125 mg
- B-125 Complex High Potency FormulaSwanson125 mg
- B-150Wonder Laboratories150 mg
- B-150 Mega B-ComplexGood 'N Natural · off the market150 mg
- B-3 Niacinamide 500 mgNutraBio500 mg
- B-50Puritan's Pride · off the market50 mg
- B-50Whole Health50 mg
- B-50NOW50 mg
- B-50Baar Nature's Blessing50 mg
- B-50 B-ComplexGood 'N Natural · off the market50 mg
- B-50 B-ComplexFoster Regal50 mg
- B-50 B-Complex VitaminGood 'N Natural · off the market50 mg
- B-50 Balanced B-ComplexNature's Bounty50 mg
- B-50 Caps B-Complex VitaminsNOW · off the market50 mg
- B-50 ComplexGood Neighbor Pharmacy50 mg
- B-50 ComplexPhysioLogics · off the market50 mg
- B-50 Complex365 Everyday Value55 mg
- B-50 Complex21st Century50 mg
- B-50 ComplexNature's Way50 mg
- B-50 ComplexCelebrate50 mg
- B-50 Complex 1000 mgRemedys Nutrition50 mg
- B-50 Complex 50 mgSource Naturals50 mg
- B-50 Complex with Active B12Bariatric Advantage50 mg