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

• Performance MultivitaminApex · off the market17.5 mg
• Performance PackNeoLife · off the market150 mg
• Performance PackSP Standard Process16 mg
• Performance PackNeoLife Sport150 mg
• Performance Preworkout Electric MangoShredz2 mg
• Performance Protein Brownie BatterForce Factor4 mg
• Performance Protein VanillaNeoLife Sport7 mg
• Performance TabletOceanus Naturals1 mg
• Peri-Menopause PlusCoast Science She-ology20 mg
• Perricone Super AntioxidantPerricone MD Nutriceuticals10 mg
• Petey's BingBing Beverage Company20 mg
• PF MultiPlus Berry Pomegranate FlavorPureFormulas60 mg
• pH Balancing Mineral ComplexCoral Advantage · off the market12.8 mg
• Pharma PFOTC Pharmaceutical Products10 mg
• Phena-LeanAnabolic Warfare25 mg
• Phena-Lean Powder Orange StrawberryAnabolic Warfare45 mg
• PhenadrenEVOchem15 mg
• PhenameraAggressive Labz · off the market20 mg
• PhenocalPharmaxa Labs25 mg
• PhenQPhenQ8 mg
• Phenta-XTGenetech Pharma Labs · off the marketin a blend
• Phood Chocolate CaramelNutraFusion Nutritionalsin a blend
• Phood VanillaNutraFusion Nutritionalsin a blend
• PhosFixHealthy Kidney550 mg
• Phosphatidyl Serine - PS BenefitsProCaps Laboratories5 mg
• Physician's Daily Multivitamin + D3Researched Nutritionals20 mg
• Physician's MultiVitamin FormulaHealth Thru Nutrition Naturally30 mg
• Phyto B ComplexEnergetix32 mg
• PhytoBurst Nutritional ChewsMannatech4 mg
• PhytoMatrixMannatech8 mg
• PhytoMulti CapsulesMetagenics50 mg
• PhytoMulti TabletsMetagenics50 mg
• PhytoMulti with Iron TabletsMetagenics50 mg
• Phytonutrient Based B-ComplexVitamer Laboratories25 mg
• Phytosterol Complex 285 mgProgressive Professional from Progressive Laboratories20 mg
• Phytotality Daily Greens FormulaPhysioLogics · off the market25 mg
• Phytox CardioPurity Products12.5 mg
• Pina Colada ShakeUniversal19 mg
• PinkbHIP20 mg
• Pink 1,000 mg Vitamin C Pink LemonadeEmergen-C4 mg
• Pink LemonadeSGN Nutrition · off the market30 mg
• Pixie Pump Rocket PopBucked Up16 mg
• Pixie Pump Sour GummyBucked Up16 mg
• Pixie Pump WatermelonBucked Up16 mg
• Pixie VitesDr. Fuhrman7.5 mg
• Plain Niacin 250 mgEP · off the market250 mg
• Plain Niacin 250 mgEndurance Products Company250 mg
• Plain Niacin 500 mgEP · off the market500 mg
• Plain Niacin 500 mgEndurance Products Company500 mg
• Planet 1000 mg Vitamin C Dragon FruitEmergen-C5 mg

Where next?

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