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

• Multivitamin MenWell At Walgreens16 mg
• Multivitamin MenWalgreens16 mg
• Multivitamin Men 50+Well At Walgreens20 mg
• Multivitamin Men 50+Walgreens20 mg
• Multivitamin Men's 50+ Advancedup&up20 mg
• Multivitamin Mineral & Herbal Supplement All Natural Wild Berry FlavorLive the Source · off the market50 mg
• Multivitamin Natural Fruit FlavorBariMelts10 mg
• Multivitamin no MineralsNature's Blend20 mg
• Multivitamin OneSeeking Health20 mg
• Multivitamin One MFSeeking Health20 mg
• Multivitamin Orange FlavorNovaMV Pediatric Drops8 mg
• Multivitamin Orange FlavorNaturesPlus Animal Parade20 mg
• Multivitamin Peach MangoLily of the Desert EcoDrink Naturals4 mg
• Multivitamin Peach MangoLily of the Desert4 mg
• Multivitamin Performance Elite MaxCodeage30 mg
• Multivitamin PlusDNA Miracles Isotonix20 mg
• Multivitamin PowderGarden of Life Kids · off the market2 mg
• Multivitamin PrenatalSundown Naturals · off the market20 mg
• Multivitamin Prenatal Gummy Raspberry LemonadeGNC Women's18 mg
• Multivitamin Prenatal Plus DHA & IronGNC Women's18 mg
• Multivitamin Prenatal Plus IronGNC Women's18 mg
• Multivitamin Raspberry Naturally FlavoredGummiology8 mg
• Multivitamin Recovery Elite MaxCodeage30 mg
• Multivitamin SensitiveSeeking Health50 mg
• Multivitamin Simply StrawberryLlama Naturals8 mg
• Multivitamin Soft Chews Very CherryCelebrate20 mg
• Multivitamin Syrup Orange Flavour LiquidSeven Seasanother unit
• Multivitamin TabletsInVite50 mg
• Multivitamin Tropical CherryEZ Melts · off the market16 mg
• Multivitamin Tropical FruitNature Made VitaMelts20 mg
• Multivitamin Ultra MegaGNC Women's50 mg
• Multivitamin Ultra Mega without IronGNC Women's50 mg
• Multivitamin Watermelon FlavorNaturesPlus Animal Parade20 mg
• Multivitamin with BCAA + Essential Amino AcidsSport Formula 9942 mg
• Multivitamin with BCAA + Essential Amino Acids Fruit PunchSport Formula 9942 mg
• Multivitamin with BCAA + Essential Amino Acids Orange BurstSport Formula 9942 mg
• Multivitamin with Fluoride 0.25 mgSancilio & Company13.5 mg
• MultiVitamin with Fluoride 0.25 mgH2 Pharma13.5 mg
• Multivitamin with Fluoride 0.5 mgSancilio & Company13.5 mg
• MultiVitamin with Fluoride 0.5 mgH2 Pharma8 mg
• MultiVitamin with Fluoride 1 mgH2 Pharma13.5 mg
• Multivitamin with Fluoride 1.0 mgSancilio & Company13.5 mg
• Multivitamin with Fluoride Chewable Tablets 0.25 mg Grape FlavorPharmaPure RX13.5 mg
• Multivitamin with Fluoride Chewable Tablets 0.5 mg Grape FlavorPharmaPure RX13.5 mg
• MultiVitamin with Fluoride DropsH2 Pharma8 mg
• Multivitamin with IronWell At Walgreens20 mg
• Multivitamin with IronWalgreens Essentials20 mg
• Multivitamin with IronIsotonix40 mg
• Multivitamin with Iron 45 mgSeeking Health40 mg
• Multivitamin with Iron 45 mgBariatric Fusion20 mg

Where next?

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