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

• Blood Sugar Control1-800-WellMed · off the market3.33 mg
• Blood Sugar HealthSNAP10 mg
• Blood Sugar ManagerEnzymatic Therapy · off the market37 mg
• Blood Sugar PremierZenith Labs50 mg
• Blood Sugar SupportWoodstock Vitamins100 mg
• Blood Sugar Support PackDouglas Laboratories120 mg
• Blood SupportNature's Plus AgeLoss · off the market50 mg
• Bloodsyl +BioPerineApproved Science · off the market2.5 mg
• Blu Frog 2Limu Energy · off the market20 mg
• BluebHIP35 mg
• Blue 1,000 mg Vitamin C Berry BlueEmergen-C5 mg
• Blue 1000 mg Vitamin C Triple BerryEmergen-C5 mg
• Blue Beauty Apaptogenic ProteinMoon Juice0.2 mg
• Blue Energy Wild Berry FlavorBlue Sky20 mg
• Blue Energy Zero CalorieBlue Sky Free20 mg
• Blue GeneControlled Labs50 mg
• Blue-Green Algae 500 mgSource Naturals3.5 mg
• BMI Bliss1st Phorm · off the market10 mg
• Body Boost Women Organic Multivitamin GummyNature's Dynamics · off the market8.82 mg
• Body Fuel Ultimate Energy Drink Natural Lemon-Lime FlavorProCaps Laboratories2.5 mg
• Body RoxUSANA12 mg
• Body, Hair, Skin & NailsMason Natural20 mg
• Bodyforge 2.0 LemonadeNeogenix · off the market10 mg
• Bone Builder ActiveMetagenics18 mg
• Bone DensityGNC Women's Ultra Mega50 mg
• Bone Density Without Iron And IodineGNC Women's Ultra Mega50 mg
• Bone Health PackDouglas Laboratories95 mg
• Bone Structure Multivitamin & MineralNatural Factors Whole Earth & Sea · off the market8.34 mg
• Bone Total HealthMartin Avenue Pharmacy120 mg
• BonitaEssential Source3 mg
• Bonita Hair Skin NailsEssential Source3 mg
• Bonita V Hair Skin NailsEssential Source5 mg
• BoostPlexus20 mg
• Boost Dutch ChocolateGreens First8 mg
• Boost Energy Matrix Vanilla Mint FlavorBioSource Labs7.5 mg
• Boost French VanillaGreens First8 mg
• Boost Rainbow CandyXP Sports10 mg
• Boost with TestofenTrojan Man8 mg
• BoostNRGRightWay Nutrition · off the market25 mg
• Botanicals TranquilitySymmetry20 mg
• BP ControlChiroNutraceutical2.5 mg
• BP PackDouglas Laboratories95 mg
• BrainMy Daily Choice · off the market6 mg
• Brain & Focus for Teens & AdultsRainbow Light · off the market23 mg
• Brain & Focus MultivitaminRainbow Light · off the market22.5 mg
• Brain & VisionFocus Factor25 mg
• Brain ACTIVEMRM · off the market30 mg
• Brain ACTIVEMRM Nutrition30 mg
• Brain BoostRelacore50 mg
• Brain Boost ComplexSMNutrition25 mg

Where next?

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