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

• Mum-2-BeHigher Nature90 mg
• Muscle & Weight Gainer ChocolatePrecision Engineeredin a blend
• Muscle & Weight Gainer VanillaPrecision Engineeredin a blend
• Muscle AidNutra BioGenesis20 mg
• Muscle Building Milk Shake Elite Series Decadent ChocolateSix Star Pro Nutrition7 mg
• Muscle Building Milk Shake Elite Series Vanilla CreamSix Star Pro Nutrition3.5 mg
• Muscle Fatigue BufferGNC Pro Performance20 mg
• Muscle Infusion Black Chocolate MonsterNutrex Research7 mg
• Muscle Infusion Black Cookie MadnessNutrex Research7 mg
• Muscle Infusion Black Vanilla BeastNutrex Research · off the market7 mg
• Muscle Infusion Black Vanilla VillainNutrex Research7 mg
• Muscle Infusion ChocolateNutrex Research5 mg
• Muscle Infusion Chocolate Banana CrunchNutrex Research5 mg
• Muscle Infusion Chocolate Peanut Butter CrunchNutrex Research5 mg
• Muscle Infusion VanillaNutrex Research5 mg
• Muscle Maker Vanilla ShakeGiant Sports0.45 mg
• Muscle Martini Mixed Berry CandyGAT20 mg
• Muscle Mass Gainer ChocolateLabradain a blend
• Muscle Matrix MRP Banana CreamNutraBio10 mg
• Muscle Matrix MRP Chocolate MilkshakeNutraBio · off the market10 mg
• Muscle Matrix MRP Creamy VanillaNutraBio · off the market10 mg
• Muscle Matrix MRP Strawberry SmoothieNutraBio10 mg
• Muscle Matrix MRP Women's Formula Banana CreamNutraBio10 mg
• Muscle Matrix MRP Women's Formula Chocolate MilkshakeNutraBio10 mg
• Muscle Matrix MRP Women's Formula Creamy VanillaNutraBio10 mg
• Muscle Matrix MRP Women's Formula Strawberry SmoothieNutraBio10 mg
• Muscle Milk Banana Creme ShakeChampBev7 mg
• Muscle Milk Brownie BatterCytoSport7 mg
• Muscle Milk ChocolateCytoSport7 mg
• Muscle Milk Chocolate Milk ShakeChampBev7 mg
• Muscle Milk Collegiate Chocolate Milk ShakeCytoSport4 mg
• Muscle Milk Collegiate Vanilla Creme ShakeCytoSport4 mg
• Muscle Milk Cookies 'N' Creme ShakeChampBev4 mg
• Muscle Milk Light Banana CremeCytoSport7 mg
• Muscle Milk Light Cake BatterCytoSport7 mg
• Muscle Milk Light Chocolate MilkCytoSport7 mg
• Muscle Milk Light Peanut Butter ChocolateCytoSport7 mg
• Muscle Milk Light Vanilla CremeCytoSport7 mg
• Muscle Milk Orange CremeCytoSportin a blend
• Muscle Milk Pro Series Intense VanillaMuscle Milkin a blend
• Muscle Milk Pro Series Knockout ChocolateMuscle Milk6 mg
• Muscle Milk Strawberry BananaCytoSportin a blend
• Muscle Milk Vanilla Creme ShakeChampBev4 mg
• Muscle Optimeal Chocolate FlavorJarrow Formulas · off the market1.6 mg
• Muscle Optimeal Vanilla CremeJarrow Formulas · off the market1.6 mg
• Muscle Stress Recovery FormulaAA Anabolic Agents · off the market160 mg
• Muscle SynergyBeverly International200 mg
• Muscle Synergy LemonBeverly International200 mg
• Muscle XGF Rich Chocolate CreamAST Sports Sciencein a blend
• Muscle XGF Vanilla Ice CreamAST Sports Sciencein a blend

Where next?

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