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

• Klean MultivitaminKlean Athlete30 mg
• Koala Freak 2.0 Aussie AppleStaunch · off the market75 mg
• Koala Freak 2.0 Pre-Workout Aussie AppleStaunch · off the market75 mg
• Koala Freak 2.0 Pre-Workout Blue 'Baz' BerryStaunch · off the market75 mg
• Koala Freak 2.0 Pre-Workout Peach MangoStaunch · off the market75 mg
• Koala Freak 2.0 Pre-Workout Strawberry Pina KoalaStaunch · off the market75 mg
• Koala Freak 2.0 Pre-Workout Tropical MojitoStaunch · off the market75 mg
• Koala Freak 2.0 Tropical MojitoStaunch · off the market75 mg
• Koala Freak 2.0 Unicorn BloodStaunch · off the market75 mg
• Koala Freak Pina KoalaStaunch · off the market75 mg
• Koala Pals Multivitamin Supplement Cherry BurstMelaleuca9 mg
• Komilon Orange Flavored SyrupCombisa Laboratorios6.26 mg
• Komodo Pump Blue Steel Blueberry MojitoAlpha Lion12.5 mg
• Kraken BombsicleSparta Nutrition · off the market30 mg
• Kraken Rainbow CandySparta Nutrition · off the market20 mg
• Kranked Busted Black Cherry LimeadeXcel Sports Nutrition · off the market15 mg
• Kyolic Blood Sugar BalanceKyolic · off the market15 mg
• Kyolic Formula 112Kyolic13.2 mg
• L-ArgicorWellgenix · off the market10 mg
• L-ArginineHuntington Labs · off the market30 mg
• L-ArginineOrphic Nutrition30 mg
• L-ArginineArazo Nutrition15 mg
• L-ArginineMillecor15 mg
• L-Arginine CapsulesNew Age30 mg
• L-Arginine Cardio CompleteHerbal Nutrition30 mg
• L-Arginine CitrullineiPro Organic Supplements · off the market30 mg
• L-Arginine Extra Strength 2662 mgBuilt By Nature30 mg
• L-Arginine+Natures Craft · off the market30 mg
• L-Carnitine ComplexGNC Total Lean18 mg
• L-Carnitine Liquid Iced Tea with LemonGNC Total Lean20 mg
• l-TryptophanIsotonix20 mg
• L-TryptophanLidtke60 mg
• L-Tryptophan 500 mgAdvanced Nutrition by Zahler8.3 mg
• L-Tryptophan CompleteLidtke TryptoGOLD60 mg
• Ladies' ChoiceBluebonnet50 mg
• Ladies' OneBluebonnet16 mg
• Ladies' One 40+Bluebonnet24 mg
• Ladies' One PrenatalBluebonnet18 mg
• Lava Orange SlushUniversal20 mg
• Lavish LashHairgenics25 mg
• LDA FormulaDouglas Laboratories200 mg
• LDA Multi-VitaminKlaire Labs · off the market60 mg
• Lean 40First Choice Supplements10 mg
• Lean Active 7 Chocolate CakeNutracore Nutrition · off the marketin a blend
• Lean Active 7 Chocolate Peanut ButterNutracore Nutrition · off the marketin a blend
• Lean Active 7 Milk & CookiesNutracore Nutrition · off the marketin a blend
• Lean Active 7 VanillaNutracore Nutrition · off the marketin a blend
• Lean Body Chocolate Ice Cream FlavorLabrada Nutritionin a blend
• Lean Body Chocolate Peanut Butter FlavorLabrada Nutritionin a blend
• Lean Body Cinnamon Bun FlavorLabrada Nutritionin a blend

Where next?

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