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

• RampantGNC Beyond Raw30 mg
• Rapidcuts ShreddedALLMAX NUTRITION12 mg
• Rapidcuts ShreddedALLMAX12 mg
• Raptor Recovery Black-Label Endurance Lemon-LimeNRG-X Labs · off the market10 mg
• Raptor Recovery Black-Label Furious Fruit PunchNRG-X Labs · off the market10 mg
• RaspberryPauling Labs5 mg
• Raspberry Acai Green TeaCelsius20 mg
• Ravage Cherry LimeadeGNC Beyond Raw20 mg
• Ravage Fruit PunchGNC Beyond Raw20 mg
• Ravage GrapeGNC Beyond Raw20 mg
• Ravage Lemon LimeGNC Beyond Raw20 mg
• Ravage OrangeGNC Beyond Raw30 mg
• Ravage Raspberry TwistGNC Beyond Raw20 mg
• Raw B-ComplexGarden of Life Vitamin Code45 mg
• Raw Eenzymes Women 50 & WiserGarden of Life · off the market0.33 mg
• Raw Enzymes MenGarden of Life0.33 mg
• Raw Enzymes Men 50 & WiserGarden of Life0.33 mg
• Raw Enzymes WomenGarden of Life0.33 mg
• Raw Enzymes Women 50 & WiserGarden of Life0.33 mg
• Raw KombuchaGarden of Life Vitamin Code40 mg
• Raw Mega Nutritional Vitamin systemBody Dynamics MaXzorb Nutrition · off the market75 mg
• Raw Mega Nutritional Vitamin systemBody Dynamics MaXzorbceuticals Nutrition75 mg
• Raw Nutrients MultivitaminGNC Beyond Raw20 mg
• RAW One For MenGarden Of Life20 mg
• Raw One For MenGarden of Life Vitamin Code16 mg
• RAW One For WomenGarden of Life20 mg
• Raw One for WomenGarden of Life Vitamin Code16 mg
• RAW Pre Extreme Kiwi BlueberryRAW20 mg
• Raw PrenatalGarden of Life Vitamin Code18 mg
• Raw Reserve Greens & Protein ChocolateAmazing Grass0.2 mg
• Raw Reserve Greens & Protein Vanilla SpiceAmazing Grass0.2 mg
• Raw VitaminsSunwarrior35 mg
• Raw Whole Food B-ComplexPeak Performance · off the market48 mg
• Raw Whole Food Organic PrenatalBiophix22 mg
• Razor Maximum StrengthSlimquick20 mg
• Re-Power Fruit PunchGNC Beyond Raw20 mg
• Re-Power OrangeGNC Beyond Raw20 mg
• Re-Pump Fruit PunchGNC Beyond Raw30 mg
• Re-Pump WatermelonGNC Beyond Raw30 mg
• Ready Clean For Women Herbal Cleanse Cran-Tea FlavorDetoxify5 mg
• Ready Clean Herbal Cleanse Grape FlavorDetoxify5 mg
• Ready Clean Herbal Cleanse Orange FlavorDetoxify5 mg
• Ready Clean Herbal Cleanse Tropical FlavorDetoxify · off the market5 mg
• Ready Clean Herbal Cleanse Tropical FlavoredDetoxify5 mg
• Ready Clean Herbal Cleanse Tropical Fruit FlavorDetoxify Brand · off the market5 mg
• Ready Clean Herbal Cleanse Tropical Fruit FlavorDetoxify · off the market5 mg
• Real Food B-ComplexSwanson20 mg
• Real Food Multi Men's DailySwanson10 mg
• Real Food Multi Women's DailySwanson10 mg
• Real Food Niacin 20 mgSwanson20 mg

Where next?

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