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

• One Daily Women's 50+Equate20 mg
• One Daily Women's 50+ AdvancedEqualine20 mg
• One Daily Women's 50+ AdvancedCVS Health · off the market20 mg
• One Daily Women's 50+ No IronThe Vitamin Shoppe20 mg
• One Daily Women's Active Metabolism21st Century10 mg
• One Daily Women's FormulaSafeway Care10 mg
• One Daily Women's FormulaSmart Sense20 mg
• One Daily Women's FormulaCVS Health · off the market16 mg
• One Daily Women's HealthKroger20 mg
• One Daily Women's HealthEquate20 mg
• One Daily Women's Multi GoldNutriGold · off the market8 mg
• One Daily Women's MultivitaminPuritan's Pride20 mg
• One Daily Women's No IronThe Vitamin Shoppe20 mg
• One Daily Women's Pro-ActiveEquate10 mg
• One Daily Women's With Calcium, Iron & ZincLongs Wellness · off the market10 mg
• One Daily Women's with Vitamin D-3Rite Aid Pharmacy20 mg
• One for MenBluebonnet16 mg
• One More Rep Berry SplashBPI Sports30 mg
• One More Rep Fruit PunchBPI Sports30 mg
• One More Rep Hurricane OrangeBPI Sports30 mg
• One More Rep Raspberry TeaBPI Sports30 mg
• ONE Multivitamin/Mineral FormulaGood 'N Natural · off the market25 mg
• One Per Day Prenatal Multi with Omega-3Kroger20 mg
• One Per Meal LifeguardLife Priority40 mg
• One RxvitaMedMD20 mg
• One Step Chocolate FlavorProgressive Professional from Progressive Laboratories13 mg
• One Step UnflavoredPL Progressive Laboratories13 mg
• One-DailyGeri-Care · off the market20 mg
• One-Daily Multi-VitaminGeri-Care20 mg
• One-Daily Multi-Vitamin And Mineral SupplementGeri-Care20 mg
• One-Daily Multi-Vitamin SupplementGeri-Care20 mg
• One-Daily Multi-Vitamin with IronGeri-Care20 mg
• One-Daily Multi-Vitamin with MineralsGeri-Care20 mg
• One-Daily Multi-VitaminsGeri-Care20 mg
• One-Per-Day MultivitaminLife Extension50 mg
• One-Per-Day TabletsLife Extension50 mg
• OneDaily Women'sMeijer20 mg
• OneviteNeomed Pharmaceutical · off the market20 mg
• Only OneNew Chapter20 mg
• Only One Liquid-Gel Mult Without IronIrwin Naturals · off the market20 mg
• Only One Liquid-Gel MultiIrwin Naturals20 mg
• Only One Liquid-Gel Multi Without IronIrwin Naturals20 mg
• Only One MultivitaminNew Chapter · off the market20 mg
• Only Protein Meal Replacement ChocolateOnly Protein15.6 mg
• Only Protein Meal Replacement VanillaOnly Protein15.6 mg
• Onward Peach PearRun Everything Laboratories20 mg
• OnyxCarbon Fire10 mg
• OPC-3 Multivitamin Activated B-Complex Calcium PlusIsotonix60 mg
• Opti-50 PlusIVL Institute For Vibrant Living100 mg
• Opti-Energy PackSuperNutrition · off the market300 mg

Where next?

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