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

• Formula V VM-75 TMSolgar · off the market75 mg
• Formula VM-2000Solgar100 mg
• Formula VM-75Solgar75 mg
• Formula VM-PrimeSolgar · off the market25 mg
• Formula VM-Prime For Adults 50+Solgar · off the market25 mg
• Forte VF Q10Farmacias de Similares S.A. de C.Vin a blend
• Forti-FlaxBarlean's Organic Oils · off the market0.461 mg
• Forti-FlaxBarlean's0.461 mg
• Fortified Vitamin And Mineral Insurance FormulaBronson Laboratories · off the market33 mg
• Fortified Vitamin and Mineral Insurance FormulaBronson33 mg
• Fortify Dual Action Energy Support 20 BillionNature's Way16 mg
• FortitudeTo The Woods15 mg
• ForwardDr. Whitaker50 mg
• Forward Gold Brain and Body MultinutrientDr. Whitaker50 mg
• Forward Gold Brain and Body MultinutrientWhitaker Nutrition50 mg
• Forward MultinutrientWhitaker Nutrition50 mg
• FosfreeMission Pharmacal21 mg
• Foskrol SchoolBiokemical5.4 mg
• Foundation EssentialsXYMOGEN32 mg
• Foundation Essentials for MenNuMedica · off the market30 mg
• Foundation Essentials For WomenNuMedica · off the market30 mg
• Foundation Essentials for Women Multimedica for WomenNuMedica30 mg
• Foward MultinutrientWhitaker Nutrition50 mg
• Fpms Female HealthSystemic Formulas Bio Function21 mg
• Free TestApplied Nutriceuticals · off the market20 mg
• Free Test XRTApplied Nutriceuticals · off the market20 mg
• FreedaviteFreeda20 mg
• Friendly-C 500 mgBIOVEA10 mg
• From the EarthThe Vitamin Shoppe25 mg
• From The Earth No-IronThe Vitamin Shoppe12.5 mg
• Frosted Cinnamon Caramel Crunch Nutrition BarsiSatoriin a blend
• Fruit & Veggies 5Nature's Plus Source of Life Animal Parade · off the market0.16 mg
• Fruit PunchSGN Nutrition · off the market30 mg
• Fruit PunchAdvoCare60 mg
• Fruitein Banana Orange CremeNature's Plus · off the market20 mg
• Fruitein Luscious Blue FruitNature's Plus · off the market20 mg
• Fruitein RainbowNature's Plus · off the market20 mg
• Fruitein Revitalizing Green Foods Natural Tropical Fruit FlavorNature's Plus · off the market20 mg
• Fruitien Acai 2500 mgNature's Plus · off the market20 mg
• Fruitien High Protein Energy Shake Exotic Red FruitNature's Plus · off the market20 mg
• Fruity VitesDouglas Laboratories20 mg
• Frutol with Full Spectrum MultivitaminsPharmax9 mg
• Fuel 7 Hour Energy Shot Fruit FlavorAdvanced Healthcare Distributors30 mg
• Fuel Extra Strength 7 Hour Energy Shot Fruit FlavorAdvanced Healthcare Distributors40 mg
• Fuel Long Lasting Energy Shot Orange FlavorAdvanced Healthcare Distributors30 mg
• Fuel-5 Berry-BlendXendurance10 mg
• Full As F*ck Fruit PunchRich Piana 5% Nutrition30 mg
• Full Blown XXX Blue RaspberryMM Sports Nutrition75 mg
• Full Blown XXX Pink LemonadeMM Sports Nutrition75 mg
• Full Blown XXX Power PunchMM Sports Nutrition75 mg

Where next?

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