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

• Multi For Him Gummies Cherry & Mixed BerryNature Made8 mg
• Multi For Him With Potent AntioxidantsNature Made20 mg
• Multi for MenMegaFood20 mg
• Multi for Men 40+MegaFood20 mg
• Multi for Men 55+MegaFood20 mg
• Multi for TeensCarlson20 mg
• Multi for WomenMegaFood · off the market20 mg
• Multi for Women 40+MegaFood20 mg
• Multi for Women 55+MegaFood20 mg
• Multi Formula With AntioxidantsBariatric Advantage40 mg
• Multi Formula without IronBariatric Advantage40 mg
• Multi G-FreeHighland Laboratories30 mg
• Multi GlycoGenestra Brands335 mg
• Multi GreensBioGenesis Nutraceuticals · off the market50 mg
• Multi GummiesNature Made20 mg
• Multi Gummies Natural Raspberry FlavorCarlson16 mg
• Multi HersMyBite Vitamins10 mg
• Multi High PotencySwanson60 mg
• Multi HisMyBite Vitamins10 mg
• Multi II Vegetable CapsulesSolgar100 mg
• Multi Jelly Beans Strawberry FlavorVitaDrops8 mg
• Multi Jelly Beans Strawberry Lemonade FlavoredNature's Bounty12 mg
• Multi KidzMyBite Vitamins8 mg
• Multi Men's PrimeSwanson · off the market5 mg
• Multi Nutrients Jelly BearsCATALO24 mg
• Multi NutriPowderBioCare10 mg
• Multi OneBluebonnet25 mg
• Multi One Iron-FreeBluebonnet25 mg
• Multi PrenatalNature Made18 mg
• Multi ProInnovative Apothecary Solutions2 mg
• Multi RXIronMagLabs10 mg
• Multi SAPNFH46 mg
• Multi Sport Men's DailyNutraBio Performance100 mg
• Multi Sport Men's FormulaNutraBio · off the market100 mg
• Multi Sport Women's DailyNutraBio Performance88 mg
• Multi Sport Women's FormulaNutraBio · off the market88 mg
• Multi t/dPure Encapsulations37.5 mg
• Multi TwoVillage Green Apothecary75 mg
• Multi Two CapsHealth Products Distributors75 mg
• Multi Two TabsHealth Products Distributors75 mg
• Multi Vegan GummiesNew Nordic16 mg
• Multi Vit Shots Natural Cherry Cola FlavorHigher Nature25 mg
• Multi Vita MinPure Synergy32 mg
• Multi Vita SoftgelsBluebonnet50 mg
• Multi VitaminNutra Sport50 mg
• Multi VitaminWebber Naturals · off the market30 mg
• Multi VitaminNature's Way0 mg as transcribed, likely a slip
• Multi VitaminAxe & Sledge Supplements50 mg
• Multi VitaminWindmill Natural Vitamins25 mg
• Multi VitaminGSL Technology5 mg

Where next?

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