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

• Vitamin B3 Niacin 500 mgLife Extension500 mg
• Vitamin B75Nature's Harmony75 mg
• Vitamin C 1000 mgNutraA2Z4 mg
• Vitamin C 1000 mg Lemon Lime Flavored Drink MixResistance C20 mg
• Vitamin C 1000 mg Orange Flavored Fizzy DrinkCVS Health5 mg
• Vitamin C 1000 mg Plus Probiotics Juicy OrangeGNC · off the market5 mg
• Vitamin C 1000 mg Raspberry Flavored Drink MixResistance C20 mg
• Vitamin C 1000 mg Tangerine Flavored Drink MixResistance C20 mg
• Vitamin C 1000 mg Tangerine-Flavored Fizzy DrinkCVS Pharmacy5 mg
• Vitamin C 500 + B-ComplexProCaps Laboratories20 mg
• Vitamin C 500 plus B-ComplexProCaps Laboratories · off the market20 mg
• Vitamin C Effervescent Powder Blend Orange FlavorWell At Walgreens5 mg
• Vitamin C PlusCatie'sin a blend
• Vitamin D & CalciumEmergen-C2.5 mg
• Vitamin D & Calcium Mixed BerryEmergen-C2.5 mg
• Vitamin EssentialsSundown Naturals100 mg
• Vitamin Mineral Fusion Fruit Punch FlavorInfoWars Life10 mg
• Vitamin Mineral RushSunwarrior · off the market16 mg
• Vitamin Mineral Rush in Aloe Vera SuperjuiceSunwarrior16 mg
• Vitamin TMuscleMeds50 mg
• Vitamin TabletDermetRx Pharmaceuticals · off the market20 mg
• Vitamin, Mineral and Amino Acid SupplementMagnus74 mg
• Vitamin-MineralFood Research30 mg
• Vitamin/Mineral Base PowderMetabolic Maintenance25 mg
• Vitaminado JarabeNutrifer20 mg
• Vitaminas PrenatalesVidasencia · off the market20 mg
• Vitaminas Prenatales Con DHAVidasencia · off the market20 mg
• VitaminsARIIX20 mg
• Vitamins & MineralsPharmax25 mg
• Vitamins & MineralsMajor20 mg
• Vitamins 4 HairIndiana Botanic Gardens70 mg
• Vitamins 4 HairBotanic Choice70 mg
• Vitamins and MineralsPharmax25 mg
• Vitamins For HairNature's Blend35 mg
• Vitamins for HairBasic Vitamins35 mg
• Vitamins for Hair FormulaIndiana Botanic Gardens · off the market70 mg
• Vitamins For The HairVitamin World100 mg
• Vitamins For The HairRadiance35 mg
• Vitamins For The HairNature's Bounty35 mg
• Vitamins For The HairGood 'N Natural · off the market20 mg
• Vitamins for the HairPuritan's Pride20 mg
• Vitamins for the Hair Timed ReleasePuritan's Pride50 mg
• Vitamins OnlySolgar50 mg
• Vitamins To Go WomenSundown · off the market200 mg
• Vitamins To Go! MaximumSundown Naturals20 mg
• Vitamins To Go! Specially Formulated For MenSundown Naturals200 mg
• Vitamins To Go! Specially Formulated For WomenSundown Naturals200 mg
• Vitamins With Minerals Tablets (21 Vitamins And Minerals)21 Super-Vita7.5 mg
• Vitamins, Minerals & ProbioticsPharmax32 mg
• VitaminzBeyond Genetics500 mg

Where next?

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