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

• Wellness Essentials ActiveMetagenics25 mg
• Wellness Essentials Brain HealthMetagenics25 mg
• Wellness Essentials Healthy BalanceMetagenics115 mg
• Wellness Essentials Men's VitalityMetagenics25 mg
• Wellness Essentials PregnancyMetagenics35 mg
• Wellness Essentials WomenMetagenics50 mg
• Wellness Essentials Women's PrimeMetagenics25 mg
• Wellness MultipleSource Naturals Wellness75 mg
• Wellness Wake-UpBolster Beauty by SottoPelle35 mg
• WesCap-C DHAWP Westminster Pharmaceuticals1.8 mg
• WesTab PlusWP Westminster Pharmaceuticals20 mg
• WestGel DHAWP Westminster Pharmaceuticals5 mg
• Wheat GrassBareOrganics · off the market4 mg
• Wheat Grass PowderBareOrganics4 mg
• Wheat Grass ShotsGreen Foods · off the market0.6 mg
• Wheat-O-PowerHerbal Hills0.04 mg as transcribed, likely a slip
• Wheat-O-Power Green Food SupplementHerbal Hills0.14 mg as transcribed, likely a slip
• Wheat-O-Power With Lemon FlavorHerbal Hills0.2 mg
• Wheat-O-Power With Orange FlavorHerbal Hills0.2 mg
• Wheatgrass 1000 mgAmazing India0.13 mg as transcribed, likely a slip
• Wheatgrass Juice PowderMaju Superfoodsin a blend
• Wheatgrass ShotsGreen Foods · off the market0.6 mg
• Whey Factors 100% Natural Whey Protein UnflavoredNatural Factors · off the market0.2 mg
• Whey Protein 100% Grass-Fed Creamy VanillaFREZZOR0.7 mg
• Whey Protein 100% Grass-Fed Rich ChocolateFREZZOR0.7 mg
• Whey Protein Chocolate FlavoredMRM Nutrition6.3 mg
• Whey Protein Swiss Chocolate FlavorIRONMAN13 mg
• Whey Protein Tahitian Vanilla FlavorIRONMAN26 mg
• Whey Protein VanillaMRM Nutrition6.3 mg
• Whey Protein Vanilla FlavoredMRM Nutrition6.3 mg
• Whey Up BerryShadow Beverages and Snacks · off the market40 mg
• Whey Up GrapeShadow Beverages and Snacks · off the market40 mg
• Whey Up OrangeShadow Beverages and Snacks · off the market40 mg
• Wheybolic Ripped Chocolate FudgeGNC AMP Advanced Muscle Performance10 mg
• Wheybolic Ripped Chocolate Peanut ButterGNC AMP Advanced Muscle Performance20 mg
• Wheybolic Ripped Classic VanillaGNC AMP Advanced Muscle Performance10 mg
• Wheybolic Ripped Cookies and CreamGNC AMP Advanced Muscle Performance10 mg
• Wheybolic Ripped Strawberries and CreamGNC AMP Advanced Muscle Performance10 mg
• Whole Body Cleanse BerryAnutra Grain0.85 mg
• Whole Body Rejuvenation FormulaNatural Factors15 mg
• Whole Food B-Complexplnt32 mg
• Whole Food B-ComplexNutraFitz Naturals · off the market100 mg
• Whole Food B-ComplexMoxyVites By NutraFitz50 mg
• Whole Food B-Vitamin Cellular RechargeCountry Life20.5 mg
• Whole Food Based Multi-VitaminTRUNATURE50 mg
• Whole Food Based MultipleBluebonnet Super Earth Rainforest Animalz20 mg
• Whole Food Blend Multivitamin & Mineral BoostArbonne Essentials · off the market20 mg
• Whole Food Brain BlendNATURELO16 mg
• Whole Food Complete Multivitamin + Beauty Blend with Hyaluronic Acid & Grape SeedNATURELO Premium Supplements20 mg
• Whole Food Complete Multivitamin + Immune Blend with Elderberry & MushroomsNATURELO Premium Supplements20 mg

Where next?

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