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.

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).

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.

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.

In which products and brands?

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 22 of 256), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.

• Avlimil MultiVianda20 mg
• AwakeGevitta · off the market5 mg
• Awake Energy Shot GrapeMarket America30 mg
• Awake Energy Shot Grape FlavorMarket America · off the market30 mg
• Awake Energy Shot Orange FlavorMarket America30 mg
• Awesome AbsAwesomeAbs4Life · off the market40 mg
• AXIO Dragon FruitLifeVantage24 mg
• AxionXyngular2.5 mg
• AxisCombine X · off the market25.6 mg
• Axis 2015Combine2 · off the market17.9 mg
• Axis Endo (formerly Estrium) Mango FlavorMetagenics · off the market12 mg
• Axis Endo Mango FlavorMetagenics12 mg
• AZV Multi VitaminSystemic Formulas Bio Nutriment200 mg
• B 100 ComplexSunmark100 mg
• B 100 ComplexThompson100 mg
• B 100 ComplexSundown Naturalist100 mg
• B 100 ComplexSpring Valley100 mg
• B 50 ComplexThompson50 mg
• B 50 ComplexSpring Valley50 mg
• B 50 ComplexVitalBulk50 mg
• B 50 Complex Timed-ReleaseSpring Valley50 mg
• B ActivXYMOGEN140 mg
• B Beet Energizer Watermelon FlavorBiochem3.6 mg
• B BrainSystemic Formulas Bio Function27 mg
• B CompleetCarlson100 mg
• B Compleet 100Carlson100 mg
• B Compleet 50Carlson100 mg
• B Complete High PotencyBuried Treasure Liquid Nutrients · off the market50 mg
• B Complete High PotencyBuried Treasure Nutritionals50 mg
• B ComplexZahler · off the market100 mg
• B ComplexThompson50 mg
• B ComplexWeCare Naturally140 mg
• B ComplexPharmax125 mg
• B ComplexSundown Naturals · off the market20 mg
• B ComplexAmazon Elements · off the market20 mg
• B ComplexRugby · off the market20 mg
• B ComplexSundown20 mg
• B ComplexNew Sun100 mg
• B ComplexAdaptogen Research200 mg
• B ComplexCalifornia Natural · off the market20 mg
• B ComplexCHK Nutrition200 mg
• B ComplexInnate Response Formulas45 mg
• B ComplexNATURELO Premium Supplements30 mg
• B ComplexBioCare50 mg
• B ComplexNature's Blend20 mg
• B ComplexWindmill16 mg
• B ComplexCarlson50 mg
• B Complex & Vitamin C 500 mg USPEqualine100 mg
• B Complex + Vitamin C Gummies Strawberry FlavorLifeable20 mg
• B Complex + Vitamin C Gummies Strawberry FlavorLifeable Kids20 mg

Where next?

• Check an amount of niacin
• Labels above the upper limit
• All ingredients