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

• Natural Berry Flavor Kidfit TigersVitaCeutical Labs20 mg
• Natural Born Hair RaiseraProvenProduct · off the market45 mg
• Natural Born Hair RaiserRag Tag Health45 mg
• Natural ChangesNature's Sunshine40 mg
• Natural Complex B B100 FormulaExchange Select X · off the market100 mg
• Natural Daily MultiKala Health16 mg
• Natural EnergyXtendlife17.2 mg
• Natural Energy LiftHealthy Choice Naturals30 mg
• Natural Green Tea Energy Mixed BerryNature's Answer · off the market20 mg
• Natural Hydration Goji Berry Green TeaNuun · off the market5.5 mg
• Natural Hydration Tangerine GingerNuun · off the market5.5 mg
• Natural PassionNature's Plus · off the market10 mg
• Natural Pineapple Flavor Adult's ChewableNature's Plus · off the market25 mg
• Natural Pre-Workout Green AppleBodyLogix30 mg
• Natural Pre-Workout Pink LemonadeBodyLogix30 mg
• Natural Prenatal VitaminDr. Berg20 mg
• Natural PreventiveNatural Health Improvement Center95 mg
• Natural Pro Complex ChocolateON Optimum Nutrition10 mg
• Natural Pro Complex VanillaON Optimum Nutrition10 mg
• Natural SleepLife Extension · off the market73.5 mg
• Natural Sleep Melatonin 5 mgLife Extension · off the market73.5 mg
• Natural Source Niacin 100 mgWindmill100 mg
• Natural Super B-ComplexSpring Valley50 mg
• Natural Testosterone BoosterLEAN Nutraceuticals30 mg
• Natural Vitamin B Complex 50 mgtnvitamins50 mg
• Natural Vitamin B1+Dr. Berg4 mg
• Natural Vitamin B12Dr. Berg2 mg
• Natural Whey Protein ChocolateMET-Rx2 mg
• Natural Whey Protein VanillaMET-Rx2 mg
• Nature PowerHealtHeaven16 mg
• Nature Trim 5GT Genesis Today6 mg
• Nature Trim.Gt6 mg
• Nature's Aphrodisiac For WomenWindmill Health Products25 mg
• Nature's HarvestNature's Sunshine · off the market12 mg
• Nature's Lab Fit Complete Delightful Vanilla FlavorDrVita Labs5 mg
• Nature's Lab Fit Complete Luxurious Chocolate FlavorDrVita Labs5 mg
• Nature's Optimal Nutrition Energize Peach MangoHealth Direct50 mg
• Nature's Optimal Nutrition Energize Peach Mango SplashHealth Direct · off the market50 mg
• Nature's PrenatalNature's Sunshine17 mg
• Nature's Wholesome MultiMDLogic · off the market20 mg
• NatureMAX BOOST Pea Protein Natural Vanilla FlavorMaxi Health20 mg
• NatureMAX ENERGIZE Whey Protein Natural Vanilla FlavorMaxi Health20 mg
• NatureMAX ORIGINAL Soy Protein Natural Vanilla FlavorMaxi Health20 mg
• NatureMAX PLUS Soy Protein Natural Chocolate FlavorMaxi Health20 mg
• Natures's HarvestNature's Sunshinein a blend
• NaturviteSolgar100 mg
• Nc CalmSystemic Formulas Bio Function3 mg
• NeevoDHAPamlab · off the market18 mg
• NeevoDHAAlfasigma USA18 mg
• Neo-CardioThorne Research · off the market290 mg

Where next?

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