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

• Women's Multi 50+Nature's Bounty14 mg
• Women's Multi 50+Thorne · off the market160 mg
• Women's Multi Blissful BerryOLLY8 mg
• Women's Multi GoldNutriGold · off the market16 mg
• Women's Multi Gummies Assorted Fruit MixThe Vitamin Shoppe16 mg
• Women's Multi Gummies RaspberryVital Proteins8 mg
• Women's Multi Natural Berry Flavorsvitafusion8 mg
• Women's Multi Organic BerryGarden Of Life MyKind Organics8 mg
• Women's Multi PearlsFinest Nutrition20 mg
• Women's Multi PlusMDLogic20 mg
• Women's Multi TangerineMegaFood16 mg
• Women's Multi VitaminCGN Gummies16 mg
• Women's Multi Vitamin & Mineral FormulaWindmill Rx Premium Vitamins25 mg
• Women's Multi Vitamins Natural FormulaBody Basix · off the market25 mg
• Women's Multi Wild Cherryvitafusion GOODNESS · off the market16 mg
• Women's Multi with IronAltrum25 mg
• Women's Multi-VitaminBIOVEA50 mg
• Women's Multi-VitaminTropical Oasis20 mg
• Women's Multi-VitaminUltamins · off the market30 mg
• Women's Multi-VitaminCalifornia Gold Nutrition Ultamins30 mg
• Women's MultipleRadiance Select80 mg
• Women's MultipleProgressive Professional from Progressive Laboratories50 mg
• Women's MultiStartNatural Factors30 mg
• Women's MultivitaminApex · off the market17.5 mg
• Women's MultivitaminSpring Valley35 mg
• Women's MultivitaminBodybuilding.com Foundation Series20 mg
• Women's MultivitaminLeader20 mg
• Women's MultivitaminGNC Earth Genius · off the market25 mg
• Women's MultivitaminNutraChamps · off the market25 mg
• Women's MultivitaminCodeage · off the market20 mg
• Women's MultivitaminBioSchwartz19.2 mg
• Women's MultivitaminRainbow Light · off the market30 mg
• Women's MultivitaminiPro Organic Supplements · off the market30 mg
• Women's MultivitaminEvlution Nutrition20 mg
• Women's MultivitaminINNATE Response Formulas20 mg
• Women's MultivitaminX Gold Health20 mg
• Women's MultivitaminSwisse Ultivite25 mg
• Women's MultivitaminVimerson Health30 mg
• Women's Multivitamindr.bo30 mg
• Women's Multivitamin & MineralNatural Factors Whole Earth & Sea25 mg
• Women's Multivitamin & Mineral with 5-MTHFKirkman20 mg
• Women's Multivitamin 50 PlusGNC Women's50 mg
• Women's Multivitamin ActiveGNC Women's50 mg
• Women's Multivitamin Berry Citrus Flavored GummiesNew Chapter3.2 mg
• Women's Multivitamin Gummiesup&up20 mg
• Women's Multivitamin Gummies Mixed Berry FlavoredRainbow Light · off the market12 mg
• Women's Multivitamin Gummies Raspberry FlavorLifeable10 mg
• Women's Multivitamin GummyMeijer8 mg
• Women's Multivitamin Health Formula with Calcium & Extra IronBasic Vitamins10 mg
• Women's Multivitamin PeachMary Ruth’s7.9 mg

Where next?

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