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

• Multivitamin with Iron Mixed Fruit FlavorVitaWorks Kids15 mg
• Multivitamin with Iron Natural Fruit FlavorBariMelts10 mg
• Multivitamin with Iron Raspberry Grape FlavorNovaFerrum Pediatric Drops8 mg
• Multivitamin with Iron Raspberry Grape FlavoredNovaFerrum Pediatric Drops4 mg
• Multivitamin with Iron Raspberry Grape FlavoredNovaFerrum32 mg
• Multivitamin with Iron Supplement Natural Grape FlavorZarbee's Naturals Baby8 mg
• Multivitamin With Minerals21st Century Organics · off the market13.4 mg
• Multivitamin with MineralsNature's Blend15 mg
• Multivitamin with Omega-3Nature Made Kids First10 mg
• Multivitamin WomenWell At Walgreens14 mg
• Multivitamin Women 50+Walgreens Essentials14 mg
• Multivitamin Women's 50+ Advancedup&up20 mg
• Multivitamin+EnergyMyTrition32 mg
• MultiVitamin, Iron and FluorideH2 Pharma8 mg
• Multivitamin/MineralHealthyBodyInc · off the market20 mg
• Multivitamin/Mineral21st Century20 mg
• Multivitamin/Mineral TabletTriCare Prenatal20 mg
• Multivitamin/Multimineralup&up · off the market20 mg
• Multivitamin/MultimineralCVS Pharmacy20 mg
• Multivitamin/MultimineralBocaGreenMD20 mg
• Multivitamin/Multimineral Adults Under 50up&up20 mg
• Multivitamin/Multimineral TabletEckson Labs20 mg
• Multivitamina Para Hombres A Base De AlimentosVidasencia · off the market30 mg
• Multivitamina Para MujeresVidasencia · off the market25 mg
• MultivitaminsSimply Supplements16 mg
• Multivitamins 100% RDASimplySupplements · off the market16 mg
• Multivitamins 100% RDASimplyValue16 mg
• Multivitamins 1000 mg SoftgelsBulkSupplements.com10 mg
• Multivitamins Adult GummyEquate10 mg
• Multivitamins for Men - with Fish Oil SoftgelsBulkSupplements.com10 mg
• Multivitamins for Men - with Fish Oil Softgels 1000 mgBulkSupplements.com10 mg
• Multivitamins for Women - with Fish Oil SoftgelsBulkSupplements.com10 mg
• Multivitamins For Women - with Fish Oil Softgels 1000 mgBulkSupplements.com10 mg
• Multivitamins SoftgelsBulkSupplements.com10 mg
• Multivitamins with Fish Oil SoftgelsBulkSupplements.com · off the market10 mg
• Multivitamins with Fish Oil Softgels 1000 mgBulkSupplements.com10 mg
• MultiviteDouglas Laboratories40 mg
• MultiviteEveryday Health15 mg
• MultiViteWelby8 mg
• MultivitesHerbalife Kids · off the market20 mg
• MultivitesHerbalife · off the market0 mg as transcribed, likely a slip
• MultiVitesvitafusion8 mg
• MultiVites Gummy VitaminsNutrition Now · off the market10 mg
• MultiVites Hair, Skin & Nails Natural Mixed Berry FlavorNutrition Now · off the market18 mg
• MultiVites Hair, Skin & Nails SupportNutrition Now · off the market12 mg
• MultiVites Men'sNutrition Now · off the market20 mg
• MultiVites Plus Digestive Support Sugar Freevitafusion4 mg
• MultiVites Plus Heart Support Natural Berry Flavorvitafusion10 mg
• MultiVites Women'sNutrition Now · off the market20 mg
• MultiWomen'sVinco30 mg

Where next?

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