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

• Schism Strawberry CoconutParabola Research · off the market40 mg
• Scientifically Advanced Vita-Lea Ocean WondersShaklee · off the market15 mg
• Sclera WhiteSuccess Chemistry40 mg
• Score! HardcoreForce Factor10 mg
• Se-Natal 19Seton Pharmaceuticals15 mg
• Se-Natal 19 ChewableSeton Pharmaceuticals15 mg
• Sea Buddies Daily Multiple SplashberryEnzymatic Therapy · off the market2.5 mg
• Sea Buddies Daily Multiple Tropical SplashEnzymatic Therapy · off the market5 mg
• SeaNU HairIVL Institute For Vibrant Living · off the market10 mg
• SeaNu HairIVL10 mg
• Secretagogue Gold OrangeMHP Maximum Human Performance6.6 mg
• Secretagogue hGH Plus Orange FlavorIVL Institute For Vibrant Living · off the market10 mg
• Secretagogue hGH Plus Raspberry Lemonade FlavorIVL Institute For Vibrant Living10 mg
• Secretagogue Plus Natural Orange FlavorIVL10 mg
• Secretagogue Plus Orange FlavorIVL10 mg
• Secure CoffeeProCaps · off the market10 mg
• Secure VanillaProCaps · off the market10 mg
• SedaplexIntegrative Therapeutics25 mg
• Select CleanseMoss Nutrition · off the market10 mg
• Select Meal DF ChocolateMoss Nutrition20 mg
• Select Meal DF VanillaMoss Nutrition20 mg
• Select Meal VanillaMoss Nutrition20 mg
• Select-OBEverett Laboratories15 mg
• Select-OB +DHAEverett Laboratories15 mg
• Select-OB Berry Flavored CapletExeltis USA15 mg
• Select-OB+DHAEverett Laboratories15 mg
• Seneca Nootropic ComplexIntelligent Labs5 mg
• Senior Complete Iron FreeDr. Becker's BioNutrients40 mg
• Senior Eye VisionVitamin World · off the market30 mg
• Senior Eye VisionGood 'N Natural · off the market30 mg
• Senior Eye VisionPuritan's Pride30 mg
• Senior Eye Vision With LuteinGood 'N Natural · off the market30 mg
• Senior Eye Vision with LutigoldVitamin World · off the market30 mg
• Senior Men's PackDouglas Laboratories120 mg
• Senior SymmetryVitanica25 mg
• Senior TabsGeri-Care20 mg
• Senior Vitestnvitamins20 mg
• Senior Women's PackDouglas Laboratories95 mg
• Seniority MultivitaminCountry Life40 mg
• Senolytic ComplexSuperSmart10 mg
• Sense For A Night OutSense28 mg
• Sense For CholesterolSense8 mg
• Sense For City LivingSense24 mg
• Sense For Nicotine LoversSense24 mg
• Sense For Weight WarriorsSense8 mg
• Sensitivi-TLifeSeasons50 mg
• Sentry21st Century20 mg
• SentryLeader20 mg
• Sentry Adults21st Century20 mg
• Sentry Energy21st Century40 mg

Where next?

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