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

• High Performance Raptor HP Dark ChocolateAST Sports Science0.87 mg
• High Performance Ripped-ManIrwin Naturals14 mg
• High Potency 50+Foods Plus20 mg
• High Potency 50+ Multivitamin & Mineral Formula with LuteinFoods Plus · off the market20 mg
• High Potency Activated B-ComplexSwanson Ultra · off the market100 mg
• High Potency B & C ComplexSundown Naturals50 mg
• High Potency B ComplexRexall Sundown Naturalist · off the market20 mg
• High Potency B ComplexSundown Naturalist · off the market20 mg
• High Potency B ComplexRexall Naturalist20 mg
• High Potency B Complex 100Equaline100 mg
• High Potency B Complex 50Equaline50 mg
• High Potency B Complex 50Foods Plus50 mg
• High Potency B Complex with Vitamin CEqualine50 mg
• High Potency B Maxi ComplexSundown Naturals200 mg
• High Potency B Maxi ComplexSundown Naturalist200 mg
• High Potency B Super Maxi ComplexSundown Naturals · off the market200 mg
• High Potency B-ComplexWindmill · off the market50 mg
• High Potency B-ComplexRexall20 mg
• High Potency B-ComplexProCaps Laboratories · off the market50 mg
• High Potency B-ComplexProCaps50 mg
• High Potency B-Complex Chewable Natural Orange FlavorSolaray · off the market50 mg
• High Potency B-Complex Chewable Natural Strawberry FlavorSolaray · off the market50 mg
• High Potency B-Complex Chewables Natural Orange FlavorSolaray50 mg
• High Potency B-Complex plus B-12Nature's Truth8 mg
• High Potency B-Complex With Folic Acid Plus Vitamin CNature's Bounty50 mg
• High Potency B100 Complex With Folic AcidSundown Naturals100 mg
• High Potency Balance B-200Swanson Premium Brand · off the market40 mg
• High Potency Balanced B-100Nature's Truth · off the market100 mg
• High Potency CAL-1000 CompleteGood 'N Natural · off the market20 mg
• High Potency CAL-1000 CompletePuritan's Pride Premium20 mg
• High Potency Chewable Multiple Vitamin & Mineral FormulaTrader Joe's2 mg
• High Potency Complete B-Complex plus Vitamin CNature's Truth · off the market25 mg
• High Potency Complete SeniorHealthSen$e · off the market20 mg
• High Potency Iron Free Ultra FreedaFreeda100 mg
• High Potency MultiFoods Plus20 mg
• High Potency Multi PackVitaCeutical Labs50 mg
• High Potency Multi PackVitamer Laboratories50 mg
• High Potency Multi without IronSwanson · off the market60 mg
• High Potency Multi-Vitamin (C+E+Calcium+B1+B2)NewtonEverett50 mg
• High Potency Multi-Vitamin QuinTabs-MFreeda · off the market100 mg
• High Potency Multiple Vitamin & MineralTrader Joe's100 mg
• High Potency Multiple VitaminsNew Sun50 mg
• High Potency Multivitamin & Mineral FormulaFoods Plus · off the market20 mg
• High Potency Niacin 100 mgNature's Plus · off the market100 mg
• High Potency Niacinamide 500 mgNatures Plus · off the market500 mg
• High Potency One Daily EssentialEqualine20 mg
• High Potency One Daily Women's with Calcium, Iron & ZincEqualine · off the market10 mg
• High Potency One-Per-Day Timed-Release Multi-Vitamins & MineralsNature's Harmony50 mg
• High Potency Prenatal FormulaEqualine20 mg
• High Potency Prenatal Vitamin & Mineral FormulaNature's Truth20 mg

Where next?

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