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

• Apetima's Plus BiokemicalRazel Laboratories6 mg
• Apex Blueberry LemonadeIronwolf Nutrition30 mg
• Appetite BoostThompson60 mg
• Appetite SuppressantYes You Can!10 mg
• Appetrex ControlGNC Total Lean20 mg
• Aqua-B6Anabolic Laboratories · off the market40 mg
• AquADEKsActavis Pharma · off the market6 mg
• Aquadeks Chewable TabletsYasoo Health · off the market10 mg
• Aquadeks Pediatric LiquidYasoo Health · off the market12 mg
• Aquadeks SoftgelsYasoo Health · off the market10 mg
• Aqueous Multi-PlusBiotics Research Corporation20 mg
• AREDS 2 Plus Multi-Vitamin TabletEyePromise20 mg
• AREDS 2 Plus TabletEyePromise · off the market20 mg
• AREDS 2 Plus TabletEye Promise · off the market20 mg
• Arez Rainbow SherbetNtel Nutra · off the market20 mg
• Arez Titanium Green AppletiniNtel Nutra · off the market15 mg
• Arginine Extreme CitrusAdvoCare5 mg
• ArginMaxGNC Women's20 mg
• ArginMaxGNC20 mg
• ArginMaxGNC Men's20 mg
• ArginMax for MenThe Daily Wellness Company20 mg
• ArginMax for WomenThe Daily Wellness Company20 mg
• ArginMax Timed-ReleaseGNC Men's · off the market20 mg
• ARM Plus+ Fruit SmoothieMax Muscle Nutrition20 mg
• ARM Plus+ Intense StrawberryMax Muscle Nutrition20 mg
• ARM Plus+ Orange Citrus BlastMax Muscle Nutrition20 mg
• ARM Plus+ Peach Mango RushMax Muscle Nutrition20 mg
• ARM Plus+ Tropical Fruit PunchMax Muscle Nutrition20 mg
• ARM Plus+ Watermelon SplashMax Muscle Nutrition20 mg
• Armor-VMusclePharm · off the market20 mg
• Armor-V Multi-Nutrient ComplexMP MusclePharm20 mg
• Arnold Iron PackMusclePharm20 mg
• Arnold Iron PackArnold Schwarzenegger Series20 mg
• Arnold Iron Pump Fruit PunchMusclePharm60 mg
• Arnold Iron Pump Raspberry LemonadeMusclePharm60 mg
• Arnold Iron Pump WatermelonMusclePharm60 mg
• Arnold Schwarzenegger Iron Pump Blue RazzMusclePharm25 mg
• Arnold Schwarzenegger Iron Pump Fruit PunchMusclePharm25 mg
• Arnold Schwarzenegger Iron Pump Pineapple MangoMusclePharm25 mg
• Arnold Schwarzenegger Iron Pump Raspberry LemonadeMusclePharm25 mg
• Arnold Schwarzenegger Iron Pump WatermelonMusclePharmin a blend
• Arsenal Training PacksMET-Rx50 mg
• ArsonM.A.P. Muscle Asylum Project · off the market14 mg
• ARTA JointezSystemic Formulas Bio Challenge80 mg
• Arth-Support FormulaDouglas Laboratories Ultra Preventive 2000 Series · off the market120 mg
• Arth-Support FormulaDouglas Laboratories · off the market120 mg
• Artho-PakDC100 mg
• ARTHOJointWonder Laboratories50 mg
• ArthoplexDC50 mg
• Arthrit-EzeXtendlife34 mg

Where next?

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