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

• All ManHigher Nature18 mg
• All Natural 8 Hour Peach MangoMuscle Feast6 mg as transcribed, likely a slip
• All Natural Electrolytes++ Hydrate Peach MangoMuscle Feast1 mg
• All Natural Energy SourceLife's Fortune10 mg
• All Natural Meal Replacement Shake VanillaOx Nutrition · off the market38 mg
• All Natural Pro-Optimal Whey Chocolate FlavorDr. Mercola Premium Supplements4 mg
• All Natural Pro-Optimal Whey Strawberry FlavorDr. Mercola Premium Supplements4 mg
• All Natural Pro-Optimal Whey Vanilla FlavorDr. Mercola Premium Supplements4 mg
• All-32 Plus With Lutein And LycopeneFDC · off the market20 mg
• All-In-One Children's Daytime Cough Syrup + Natural Grape FlavorZarbee's1 mg
• All-In-One Daily Essentials Shake ChocolateLyfe Fuel10 mg
• All-In-One Daily Essentials Shake Vanilla ChaiLyfe Fuel10 mg
• All-In-One MultivitaminThompson20 mg
• All-In-One Shake ChaiThe Cheat System Diet10 mg
• All-In-One Shake ChocolateThe Cheat System Diet10 mg
• All-In-One Shake VanillaThe Cheat System Diet · off the market10 mg
• All-In-One Whey + Greens Milk ChocolateMuscleTech Performance Series10.5 mg
• All9 Amino Cola Lime TwistDymatize · off the market20 mg
• All9 Amino Fruit Fusion RushDymatize20 mg
• All9 Amino Jolly Green AppleDymatize · off the market20 mg
• All9 Amino Juicy WatermelonDymatize20 mg
• All9 Amino Orange CranberryDymatize20 mg
• AllBee C-800International Vitamin Corporation100 mg
• AllBee Plus Vitamin CInternational Vitamin Corporation50 mg
• AllBee with CInternational Vitamin Corporation50 mg
• Aller G 25OL Olympian Labs · off the market20 mg
• Aller-BProgressive Professional from Progressive Laboratories50 mg
• Aller-G DefensePrescribed Choice · off the market20 mg
• AlmasedAlmased6 mg
• Almased Almond Vanilla FlavorAlmased · off the market5.7 mg
• Almond Liquid Vite MinGenestra Brands20 mg
• AloeAminos Power NutritionDr. LaMar's Productsin a blend
• Alpha ATP Cherry LemonadeMMUSA8 mg
• Alpha Base Capsules with IronOrtho Molecular Products25 mg
• Alpha Base Capsules Without IronOrtho Molecular Products25 mg
• Alpha Base Premier PacksOrtho Molecular Products25 mg
• Alpha Base Tablets Without IronOrtho Molecular Products · off the market25 mg
• Alpha BeardHollis Nutrition5 mg
• Alpha BeticNature's Way32 mg
• Alpha Betic MultivitaminNature's Way · off the market32 mg
• Alpha Burn Cosmic CandyMuscleSport20 mg
• Alpha DailyOptimal Alpha10 mg
• Alpha Day Brain Focus FormulaPeak Performance Nutraceutics12.5 mg
• Alpha IQ MindRomeo Health12.5 mg
• Alpha King Fury Blue RaspberryForce Factor10 mg
• Alpha King SupremeForce Factor10 mg
• Alpha King SurgeForce Factor10 mg
• Alpha Male StrawberryMMUSA3 mg
• Alpha PowerInfoWars Life5 mg
• Alpha VitesCoastal Nutrition · off the market20 mg

Where next?

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