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

• More Than A Multiple Multivitamin For MenAmerican Health50 mg
• More Than A Multiple Multivitamin For WomenAmerican Health37.5 mg
• More Than A Multiple Multivitamin FormulaAmerican Health37.5 mg
• More Than A Multiple With Brain EssentialsAmerican Health25 mg
• More Than A Multiple With Cardio EssentialsAmerican Health40 mg
• More Than A Multiple With Energy EssentialsAmerican Health40 mg
• More Than A Multiple With Vision EssentialsAmerican Health25 mg
• MorningLife Time Fitness · off the market60 mg
• Morning Buzz Blue RaspberryNew Health Corp.60 mg
• Morning Buzz Fruit PunchNew Health Corp.60 mg
• Morning Buzz Orange BurstNew Health Corp.60 mg
• Morning Buzz Sport Blueberry LemonadeNew Health Corp.60 mg
• Morning Liquid MultiVitaminCountry Farms16 mg
• Morning Man GreensMorning Man20 mg
• MorphomultiMN Morphogen Nutrition100 mg
• MorphopumpMN Morphogen Nutrition100 mg
• MoRS LQ Methylation DonorSystemic Formulasin a blend
• MoRS Methylation DonorSystemic Formulas20 mg
• Mother & ChildPure Essence100 mg
• Mother Kare Prenatal MultivitaminNature's Gifts · off the market20 mg
• Mother Nature PrenatalUC UltraChamp · off the market20 mg
• Mother to BePure Essence60 mg
• Mr Hyde Intense Energy Pre Workout Blue RazzPS ProSupps25 mg
• Mr Hyde Intense Energy Pre Workout Cherry BombPS ProSupps25 mg
• Mr Hyde Intense Energy Pre Workout Cotton CandyPS ProSupps25 mg
• Mr Hyde Intense Energy Pre Workout Green ApplePS ProSupps25 mg
• Mr Hyde Intense Energy Pre Workout Mango Passion FruitPS ProSupps25 mg
• Mr Hyde Intense Energy Pre Workout Orange BurstPS ProSupps25 mg
• Mr Hyde Intense Energy Pre Workout WatermelonPS ProSupps25 mg
• Mr Hyde Intense Energy Shot Blue RazzPS ProSupps5 mg
• Mr Hyde Intense Energy Shot Blue RazzProSupps5 mg
• Mr Hyde Intense Energy Shot Fruit PunchPS Prosupps · off the market5 mg
• Mr Hyde Intense Energy Shot Fruit PunchProSupps5 mg
• Mr Hyde Intense Pre Workout Berry BlastPS ProSupps25 mg
• Mr Hyde NitroX Blue Razz PopsiclePS ProSupps25 mg
• Mr Hyde NitroX Cherry PopsiclePS ProSupps · off the market25 mg
• Mr Hyde NitroX Cotton CandyPS ProSupps · off the market25 mg
• Mr Hyde NitroX Lollipop PunchPS ProSupps25 mg
• Mr Hyde NitroX Orange SlicePS ProSupps25 mg
• Mr Hyde NitroX Peachy OH!PS ProSupps25 mg
• Mr Hyde NitroX Pixie DustPS ProSupps25 mg
• Mr Hyde NitroX Red Fish CandyPS ProSupps25 mg
• Mr Hyde NitroX Sour Green ApplePS ProSupps25 mg
• Mr Hyde NitroX What-O-MelonPS ProSupps25 mg
• Mr Hyde Signature Pre-Workout Blue Razz PopsicleProSupps · off the market14 mg
• Mr Hyde Signature Pre-Workout Blue Razz PopsiclePS ProSupps14 mg
• Mr Hyde Signature Pre-Workout Lollipop PunchPS ProSupps14 mg
• Mr Hyde Test Surge Cherry LimeadePS ProSupps25 mg
• Mr Hyde Test Surge Pre-Workout Pineapple MangoPS ProSupps25 mg
• Mr Hyde Test Surge Sour WatermelonPS ProSupps25 mg

Where next?

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