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

• Real Niacin (As Nicotinic Acid) 500 mgDoctor's Best500 mg
• Realfood Organics for MenCountry Life12 mg
• Realfood Organics for WomenCountry Life16 mg
• ReAlineRnA ReSet10 mg
• RealMeal GF Natural Chocolate FlavorRealDose10 mg
• RealMeal GF Natural Vanilla FlavorRealDose10 mg
• Reaphirm Plant Source DHAEverett Laboratories15 mg
• Rebel Black CherryGNC Beyond Raw40 mg
• Rebel Fruit BlastGNC Beyond Raw20 mg
• Rebirth Fruit PunchEnraged · off the market40 mg
• Recharge For EveryoneNorthestar27 mg
• Recharge For HerNorthestar25 mg
• Recombinant Chocolate EclaireFight Labs10 mg
• ReconnectIVL Institute For Vibrant Living · off the market12 mg
• ReconnectIVL12 mg
• RECOVER Guava LimeVital Performance8 mg
• RECOVER Lemon GrapeVital Performance8 mg
• RECOVER Watermelon BlueberryVital Performance8 mg
• RECOVER Yuzu ClementineVital Performance8 mg
• Recovery Accelerator Apple BerryVega Sport · off the market5 mg
• Recovery Apple Berry FlavoredVega Sport5 mg
• Recovery BCAA Arctic FreezeProven4 Sport P420 mg
• Recovery Shake ChocolateMET-Rx 180(0)5 mg
• Recovery Shake VanillaMET-Rx 180(0)5 mg
• Recovery Tropical FlavoredVega Sport5 mg
• RecoveryWAVE Lemon GrapeVital Proteins Performance8 mg
• RecoveryWAVE Watermelon BlueberryVital Proteins Performance8 mg
• Recuperade Citrus BlastGo Epic Health · off the market20 mg
• RedNature's Plus Source of Life · off the market40 mg
• Red Bull Energy DrinkRed Bull · off the marketin a blend
• Red Bull SugarfreeRed Bull · off the marketin a blend
• Red Bull Total ZeroRed Bull · off the marketin a blend
• Red Cobra 69000We Care Distributor · off the market25 mg
• Red Power Elixir Cranberry CitrusRed Elixir · off the marketin a blend
• Red TabletKRKAin a blend
• Red White & Boom Energy Drink Alpine Pew PewMerica Labz20 mg
• Red White & Boom Energy Drink Daytona BeachMerica Labz20 mg
• Red White & Boom Energy Drink Freedom'Merica Energy20 mg
• Red White & Boom Energy Drink Victory Cream SodaMerica Labz20 mg
• Red WolfONL Osyris Nutrition Lab5 mg
• Red Yeast RiceNutrifect Nutrition · off the market50 mg
• Red Yeast Rice 1200 mg CoQ10 100 mgNutra Harmony16 mg
• Red Yeast Rice CoQ-10Solaray50 mg
• Redeem LemonadeRed Rain · off the market20 mg
• Redeem Tea & LemonadeRed Rain · off the market20 mg
• Redline Power RushVPXin a blend
• Redline Power Rush Exotic FruitVPX5 mg
• Redline Power Rush Peach MangoVPX5 mg
• Redline Power Rush Wild GrapeVPX5 mg
• Redrum Devils BloodInsane Labz10 mg

Where next?

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