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

• Prenatal Vitamins PlusZIKS Nnodum Pharmaceuticals20 mg
• Prenatal Vitamins Plus Low Iron Multi StrengthPatrin Pharma20 mg
• Prenatal Vitamins Plus Low Iron TabletsPatrin Pharma20 mg
• Prenatal Vitamins With MineralsShopRite20 mg
• Prenatal Vitamins with MineralsFamily Wellness20 mg
• Prenatal With DHAVitaCeutical Labs20 mg
• Prenatal With DHAVitamer Laboratories20 mg
• Prenatal With DHAGNC Women's18 mg
• PreNatal with Folic Acid21st Century20 mg
• Prenatal with Folic AcidMeijer20 mg
• Prenatal with IronGNC Women's18 mg
• Prenatal with Vegan DHA plus ProbioticsGreens First Female20 mg
• Prenatal Women's Essentials + Folic Acid 800 mcgSundance Vitamins20 mg
• Prenatal+DHA 100Zahler20 mg
• Prenatal+DHA 250Zahler30 mg
• Prenatal-U CapsulesCypress Pharmaceutical · off the marketin a blend
• PrenatalgynAdvantage Nutraceuticals · off the market45 mg
• Prenate EliteAvion Pharmaceuticals21 mg
• Prenate StarAvion Pharmaceuticals21 mg
• PrenatVite PlusAUM Pharmaceuticals20 mg
• PrenatVite RxAUM Pharmaceuticals18 mg
• PrenaviteRugby20 mg
• PrePLUS TabletVirtus Pharmaceuticals20 mg
• Prescriptive Formulas Optimal Vitamin Packs Men'sNature's Bounty · off the market60 mg
• Pressur-LoBronson60 mg
• Pressur-LoFuturebiotics180 mg
• PreTAB TabletVirtus Pharmaceuticals20 mg
• PreWAVE Natural Lemon Grape FlavorVital Proteins Performance8 mg
• PreWAVE Natural Watermelon Blueberry FlavorVital Proteins Performance8 mg
• PreWO Cherry WatermelonDymatize · off the market15 mg
• PreWO Chilled Fruit FusionDymatize · off the market15 mg
• PreWO Handspun Cotton CandyDymatize · off the market15 mg
• PreWO Pineapple Orange CrushDymatize · off the market30 mg
• PreWO Sweet Cherry LimeDymatize · off the market15 mg
• PrimaCareAvion Pharmaceuticals10 mg
• PrimalEu Natural8 mg
• Primal Damage ControlPrimal Blueprint20 mg
• Primal Hydration Lemon-Berry FlavorPrimal Harvest20 mg
• Primal MultivitaminPrimal Harvest20 mg
• Primal PumpPanthera · off the marketin a blend
• Primary Care Men's DailyPatient One 1 MediNutritionals20 mg
• Primary Care Women's DailyPatient One 1 MediNutritionals20 mg
• Primary Nutrition4 Today · off the market40 mg
• PrimeMDrive50 mg
• Prime BeardNutraChamps5 mg
• Prime PackNeoLife150 mg
• Prime ShredHealth Nutrition Unlimited15 mg
• Prime TimeForce Factor0.84 mg
• PrimeMind Brain Health FormulaNatrogix · off the market25 mg
• Primitive Pump UnflavoredMuscle Feast40 mg

Where next?

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