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

• SuperPump Max Refreshing OrangeGaspari Nutrition · off the market80 mg
• SuperPump MAX Sour Apple CandyGaspari Nutrition79 mg
• SuperPump MAX WatermelonGaspari Nutrition79 mg
• SuperVB.E.S.T Process Alka-Line Supplements25 mg
• SuperVitaminBodycor Naturals · off the market20 mg
• Supple Natural Peach MangoSupple20 mg
• Supradyn ActivoBayer16 mg
• Supreme Liquid Multivitamin Tropical Fruit FlavorOptim Nutrition20 mg
• Supreme Multivitaminnbi50 mg
• Supreme Stress BVitaCeutical Labs100 mg
• Supreme Stress BVitamer Laboratories100 mg
• Supreme Stress BVillage Vitality · off the market100 mg
• Supreme Stress BWoodstock Vitamins100 mg
• Supreme Vital Hair with MSMLifeTIME30 mg
• Surf SupplementAPSU · off the market4 mg
• SurpriseCombine2 · off the market18 mg
• Sustained EnergyNOW Sports20 mg
• Sustained Release B Complex 50Windmill Natural Vitamins50 mg
• Sustained Release B-100NOW100 mg
• Sustained Release Dyno VitesNature's Plus · off the market125 mg
• Sustained Release Endur-B ComplexEP · off the market200 mg
• Sustained Release Endur-VM Multi-Vitamin & Mineral (Contains Iron)EP · off the market30 mg
• Sustained Release Endur-VM Multi-Vitamin & Mineral (Without Iron)EP · off the market30 mg
• Sustained Release High Potency B "100"Trader Joe's100 mg
• Sustained Release High Potency B "50"Trader Joe's50 mg
• Sustained Release Magnum-75Windmill · off the market75 mg
• Sustained Release NiacinSwanson Ultra · off the market500 mg
• Sustained Release Niacin 250 mgWindmill250 mg
• Sustained Release Niacin 250 mgWindmill Natural Vitamins250 mg
• Sustained Release Niacin 500 mgWindmill · off the market500 mg
• Sustained Release Niacin 500 mgBronson Laboratories · off the market500 mg
• Sustained Release Niacin 500 mgBronson500 mg
• Sustained Release Power-PlexNature's Plus · off the market100 mg
• Sustained Release Ultra HairNature's Plus · off the market30 mg
• Sustained Release Ultra IINatures Plus · off the market100 mg
• Sustained Release Ultra II DailyNaturesPlus100 mg
• Sustained Release Ultra II LightNatures Plus · off the market100 mg
• Sustained Release Ultra SkinNature's Plus · off the market150 mg
• Sustained-Release Niacin with niaXtend 500 mgDoctor's Best500 mg
• Swag Shot Fruit PunchCeltic Labs · off the marketin a blend
• SwaggerForce Factor25 mg
• Sweat Effect Strawberry WatermelonNutra Innovations15 mg
• Sweet DefenseEnzymatic Therapy · off the market115 mg
• Sweet DefenseNature's Way115 mg
• Sweet Relief Glycogen Support ExtremeJustified Laboratories50 mg
• Swift Energy Pineapple PunchOLLY2 mg
• SynadreneHi-Tech Pharmaceuticals20 mg
• SynaQuellThorne207.5 mg
• SynaQuell +Thorne · off the market415 mg
• Syndion CapsulesYasoo Health · off the market22 mg

Where next?

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