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

• Alpha-TeenMegaFood · off the market30 mg
• AlphaFlowNutracraft30 mg
• AlphaSurge DRV1st Phorm25 mg
• Alpine Custom Complete with IronAlpine Clinic200 mg
• Alsa Dragon FruitAlsa · off the market30 mg
• AmThorne FX · off the market60 mg
• AmLife Time Fitness · off the market60 mg
• AM FormulaTriVita · off the market20 mg
• AM FormulaLife Time Fitness · off the market30 mg
• AM MorningKAL20 mg
• AM PackDouglas Laboratories15 mg
• Amazing Meal Chocolate InfusionAmazing Grass0.63 mg
• Amazing Meal Pomegranate MangoAmazing Grass260.17 mg as transcribed, likely a slip
• Amazing Meal Vanilla ChaiAmazing Grass0.27 mg
• Amino Evolution Cherry Iceproject#120 mg
• Amino FuelTwinlab · off the market30 mg
• Amino Restore Natural Choclate FlavorTaylor MD Formulations40 mg
• Amino Restore Natural Vanilla FlavorTaylor MD Formulations40 mg
• Amino TechUniversal20 mg
• Amino-Tone America!Ronnie Coleman Signature Series20 mg
• AMINOCORE BCAA Blue RaspberryALLMAX20 mg
• AMINOCORE BCAA Fruit PunchALLMAX20 mg
• AMINOCORE BCAA Pineapple MangoALLMAX20 mg
• AMINOCORE BCAA Sweet TeaALLMAX20 mg
• AMINOCORE BCAA WatermelonALLMAX · off the market20 mg
• AMINOCORE BCAA White GrapeALLMAX20 mg
• Aminocore Blue RaspberryALLMAX NUTRITION20 mg
• AminoCore Fruit Punch BlastALLMAX NUTRITION20 mg
• Aminocore Key Lime CherryALLMAX NUTRITION20 mg
• AMINOCORE Natural Cranberry AppleALLMAX20 mg
• AminoEV Rocket Popproject#120 mg
• AminoMeal Select ChocolateMoss Nutrition20 mg
• AminoMeal Select Orange-PineappleMoss Nutrition20 mg
• AminoMeal Select VanillaMoss Nutrition20 mg
• AMP Explosive Energy MetabolizerGNC Pro Performance AMP20 mg
• Amp'd UP Energy Shot Mixed BerryCBDXtreme20 mg
• Amp-Nox Gummy Bearproject#110 mg
• Amp-Nox Orange Mangoproject#110 mg
• Amped ECN NOS Fruit PunchMET-Rx · off the market75 mg
• Amped ECN NOS With QUIK-CREAT Fruit PunchMET-Rx75 mg
• AMPED Hydrate Blue RaspberryIsagenix1.6 mg
• AMPED Hydrate CoconutIsagenix1.6 mg
• AMPED Hydrate Lemon LimeIsagenix1.6 mg
• AMPED Hydrate OrangeIsagenix1.6 mg
• Amped RTD Blue InfernoMET-Rx20 mg
• Amped RTD Earthquake GrapeMET-Rx20 mg
• Amped RTD Mega Knockout PunchMET-Rx20 mg
• AmphetaleanBeast10 mg
• Amplified Creatine XXX Power Fruit PunchGNC Pro Performance AMP22.5 mg
• Amplified Creatine XXX Power Orange TwistGNC Pro Performance AMP22.5 mg

Where next?

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