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

• Multivitamin Adults 50+Well At Walgreens20 mg
• Multivitamin Adults 50+Walgreens20 mg
• Multivitamin and Mineral Formula without IronDr. Clark Research Association Dr. Clark Zentrum20 mg
• Multivitamin And Mineral PowderThe Vitamin Shoppe · off the market100 mg
• Multivitamin and Mineral TabletEnfamil20 mg
• Multivitamin and Mineral TabletAbbott20 mg
• Multivitamin BerryLily of the Desert EcoDrink Naturals4 mg
• Multivitamin BerryLily of the Desert4 mg
• Multivitamin Cherry FlavorNaturesPlus Animal Parade20 mg
• Multivitamin Chewable & Crushable Tablets OrangeNature Made Kids First6 mg
• Multivitamin Chewable Tablets Delicious Tropical Berry FlavorNu Life20 mg
• Multivitamin Children's ChewablesDr. Mercola Premium Supplements · off the market20 mg
• Multivitamin ComplexHerbalife · off the market33 mg
• Multivitamin Complex +Harmonia50 mg
• Multivitamin Diabetic SupportGNC Women's50 mg
• Multivitamin Drops with Fluoride & Iron 0.25 mg/mLSancilio & Company8 mg
• Multivitamin Drops with Fluoride 0.25 mg/mLSancilio & Company8 mg
• Multivitamin Drops with Fluoride 0.5 mg/mLSancilio & Company8 mg
• Multivitamin EasySticks Natural Blueberry FlavorPure Encapsulations10 mg
• Multivitamin Energy & MetabolismGNC Women's50 mg
• Multivitamin Featuring Supportalpha betic · off the market40 mg
• Multivitamin Fifty PlusIsotonix20 mg
• Multivitamin for Daily EnergyMegaFood16 mg
• Multivitamin for Daily Immune SupportMegaFood16 mg
• Multivitamin for Daily Stress ReliefMegaFood16 mg
• Multivitamin for KidsPureFormulas · off the market12 mg
• Multivitamin for MenSonora Nutrition50 mg
• Multivitamin for MenNutricost30 mg
• Multivitamin for WomenSonora Nutrition50 mg
• Multivitamin Formula Adult GummySundown Naturals · off the market10 mg
• Multivitamin Fruit PunchLily of the Desert EcoDrink Naturals4 mg
• Multivitamin GoldNaturesPlus Animal Parade20 mg
• Multivitamin Gold Cherry FlavorNaturesPlus Animal Parade20 mg
• Multivitamin Gold Grape FlavorNaturesPlus Animal Parade20 mg
• Multivitamin Gold Orange FlavorNaturesPlus Animal Parade20 mg
• Multivitamin Gold Watermelon FlavorNaturesPlus Animal Parade20 mg
• Multivitamin Grape FlavorNaturesPlus Animal Parade20 mg
• Multivitamin GummiesSundown Naturals10 mg
• Multivitamin GummiesNature Made Kids First10 mg
• Multivitamin GummiesSundown10 mg
• Multivitamin Gummies AdultWell At Walgreens10 mg
• Multivitamin Gummies AdultWalgreens8 mg
• Multivitamin Gummies Fruit FlavorLifeable Kids4 mg
• Multivitamin Gummies With Co Q-10Sundown Naturals10 mg
• Multivitamin Gummy Mixed BerryGNC Women's8 mg
• Multivitamin Gummy Raspberry Lemonade FlavorCooper Complete5.5 mg
• Multivitamin Iron-FreeWell At Walgreens20 mg
• Multivitamin LiquidGarden of Life Baby2 mg
• Multivitamin Liquid Gold Tropical Berry FlavorNaturesPlus Animal Parade20 mg
• Multivitamin Liquid Tropical Berry FlavorNature's Plus Animal Parade20 mg

Where next?

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