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

• Effervescent Effer-Energy Tropical Punch FlavorNOW Sports20 mg
• Effervescent Energy Lava LimeEruption · off the market20 mg
• Effervescent Vitamin C Orange Flavored365 Everyday Value5 mg
• Efficient C + Cranberry BenefitsProCaps Laboratories3 mg
• Efficient C Mixed BerryProCaps Laboratories3 mg
• Egg White Protein Chocolate FlavoredMRM Nutrition6.2 mg
• Egg White Protein Vanilla FlavorMRM Nutrition6.2 mg
• Egg White Protein Vanilla FlavoredMRM Nutrition6.2 mg
• EinsteinLove Me · off the market12.5 mg
• EinsteinLove Me Nutrition12.5 mg
• Elan Vital MultipleSource Naturalsin a blend
• Elderberry + Vitamin C Raspberry Flavor GummiesBeLive5 mg
• Elderberry Immune+Emergen-C4.5 mg
• Ele-MaxIntegrative Therapeutics100 mg
• Electro-Vita-MinTrace Minerals Research · off the market35 mg
• Electro-Vita-Min Daily 5Trace Minerals Research30 mg
• ElectrolyteMTN OPS20 mg
• Electrolyte Complex Pink LemonadeNutricost25 mg
• Electrolyte Fizz GrapeBodyTech5 mg
• Electrolyte Fizz Lemon LimeBodyTech5 mg
• Electrolyte Fizz WatermelonBodyTech5 mg
• Electrolyte Plus CBioGenesis Nutraceuticals · off the market5 mg
• Electrolyte Powder CherryTerra Origin16 mg
• Electrolytes Advanced Hydration Complex Cucumber LimeNutricost25 mg
• Electrolytes Advanced Hydration Complex Orange MangoNutricost25 mg
• Electrolytes Advanced Hydration Complex Orchard BlastNutricost25 mg
• Electrolytes Advanced Hydration Complex POG (Passion Fruit/Orange/Guava)Nutricost25 mg
• Electrolytes Advanced Hydration Complex Powder Watermelon LimeNutricost25 mg
• Electrolytes Advanced Hydration Complex Tropical Fruit PunchNutricost25 mg
• Electrolytes Advanced Hydration Powder Cucumber LimeNutricost25 mg
• Electrolytes Advanced Hydration Powder Orange MangoNutricost25 mg
• Electrolytes Advanced Hydration Powder Orchard BlastNutricost25 mg
• Electrolytes Advanced Hydration Powder POG (Passion Fruit/Orange/Guava)Nutricost25 mg
• Electrolytes Advanced Hydration Powder Tropical Fruit PunchNutricost25 mg
• Electrolytes Advanced Hydration Powder Watermelon LimeNutricost25 mg
• Electrolytes Energy Cherry LimeadeNuun20 mg
• Electrolytes Energy Fresh LimeNuun20 mg
• Electrolytes Energy Mango OrangeNuun20 mg
• Electrolytes Energy Wild BerryNuun20 mg
• Electrolytes++ Hydrate Blue Ice Pop FlavorMuscle Feast0.9 mg
• Electrolytes++ Hydrate Tangerine FlavorMuscle Feast0.9 mg
• Electrolytes++ Hydrate UnflavoredMuscle Feastin a blend
• Electrolytes++ Hydrate Watermelon FlavorMuscle Feast0.9 mg
• ElementalArms Race Nutrition80 mg
• Elemental Select VanillaMoss Nutrition · off the market2.5 mg
• Elevate Smart CoffeeElevacity8 mg
• Elevera4 Organics25 mg
• Elexia PlusWellgenix · off the market5 mg
• Elite AthleteCooper Complete20 mg
• Elite Athlete Multi-VitaminDouglas Laboratories · off the market20 mg

Where next?

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