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

• #M6Teen CherryDY Nutritionin a blend
• #Shatter SX-7 Black Onyx Fruit Punch ExplosionMuscleTech30 mg
• #Shatter SX-7 Black Onyx Icy Rocket FreezeMuscleTech30 mg
• #Shatter SX-7 Black Onyx Neuro Watermelon FusionMuscleTech30 mg
• #Shatter SX-7 Black Onyx Ripped Cherry Limeade TwistMuscleTech30 mg
• +B Boost B-ComplexShaklee · off the market270 mg
• +PlusShake Raw ChocolateGreens+3.5 mg
• +PlusShake Raw VanillaGreens+3.3 mg
• .30-06Micronamin25 mg
• 01-02 Enhanced Fat Melting MatrixATS Labsin a blend
• 1 ActivatorSystemic Formulas Bio Command18 mg
• 1 Vitamin + MineralPioneer · off the market50 mg
• 1 Week FlushMichael's Naturopathic Programs · off the market30 mg
• 1 Week FlushMNP Michael's Naturopathic Programs · off the market30 mg
• 1 Week FlushMH Michael's Health Naturopathic Programs30 mg
• 1,000 mg Vitamin C Acai BerryEmergen-C4 mg
• 1,000 mg Vitamin C Coconut-PineappleEmergen-C4 mg
• 1,000 mg Vitamin C Cranberry-PomegranateEmergen-C4 mg
• 1,000 mg Vitamin C Key LimeEmergen-C4 mg
• 1,000 mg Vitamin C Lemon-LimeEmergen-C4 mg
• 1,000 mg Vitamin C LiteEmergen-C10 mg
• 1,000 MG Vitamin C Lite Citrus FlavoredEmergen-C10 mg
• 1,000 MG Vitamin C MangosteenEmergen-C5 mg
• 1,000 mg Vitamin C Meyer LemonEmergen-C4 mg
• 1,000 mg Vitamin C OrangeEquate4 mg
• 1,000 mg Vitamin C Paradise FruitEmergen-C4 mg
• 1,000 mg Vitamin C Pink LemonadeEmergen-C4 mg
• 1,000 mg Vitamin C RaspberryEmergen-C4 mg
• 1,000 mg Vitamin C Raspberry Flavored Fizzy Drink MixEmergen-C5 mg
• 1,000 mg Vitamin C Strawberry-KiwiEmergen-C4 mg
• 1,000 mg Vitamin C Super OrangeEmergen-C4 mg
• 1,000 mg Vitamin C TangerineEmergen-C4 mg
• 1,000 mg Vitamin C TropicalEmergen-C4 mg
• 1-Db Goddess1st Phorm16 mg
• 1-Db Overdrive1st Phorm16 mg
• 1.M.R Apple PearBPI Sports25 mg
• 1.M.R Blue RaspberryBPI30 mg
• 1.M.R Blueberry LemonadeBPI Sports25 mg
• 1.M.R Cherry LimeBPI30 mg
• 1.M.R Fruit PunchBPI30 mg
• 1.M.R Fruit PunchBPI Sports25 mg
• 1.M.R Grape BubblegumBPI30 mg
• 1.M.R Lemon LimeBPI30 mg
• 1.M.R OrangeBPI25 mg
• 1.M.R Peach CobblerBPI Sports25 mg
• 1.M.R Pink LemonadeBPI30 mg
• 1.M.R Rainbow IceBPI Sports25 mg
• 1.M.R Vortex Blue RazBPI Sports20 mg
• 1.M.R Vortex Blueberry Lemon IceBPI Sports20 mg
• 1.M.R Vortex Cherry LimeBPI Sports20 mg

Where next?

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