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

• FocusHost Defense Mushrooms Mycobenefits50 mg
• Focus + Energy OrangeFocus Factor30 mg
• Focus Attention PowderNature's Sunshine · off the market3 mg
• Focus Complex With Neuro-PSVitamin World25 mg
• Focus FactorFOCUSfactor · off the market25 mg
• Focus FactorFocus Factor25 mg
• Focus Factor Extra StrengthFocus Factor25 mg
• Focus Factor F29 Extra StrengthFocus Factor30 mg
• Focus Factor Max StrengthFocus Factor30 mg
• Focus Factor Pro Max NootropicFocus Factor10 mg
• Focus Factor Sports Nootropic Fruit PunchFocus Factor16 mg
• Focus FastEnyotics Health Sciences25 mg
• Focus Fast ExtremeEnyotics Health Sciences25 mg
• Focus FormulaVitabase15 mg
• Focus NowRise-N-Shine30 mg
• Focus PepAddrena1.5 mg
• Focus SupportCovalent Medical2 mg
• FocusAid Brain Boost Melon MateFOCUSAID16 mg
• FocusAid Brain Boost Watermelon MintFOCUSAID16 mg
• FocusAid Zero Brain Boost Melon MateFOCUSAID16 mg
• FocusAllHealthy Natural Solutions25 mg
• FocusFactorFOCUSfactor25 mg
• FOCUSfactorFocus Factor25 mg
• Folate MethylationPriority One Nutritional Supplements50 mg
• Folbee PlusBreckenridge Pharmaceutical20 mg
• Folic Acid + Iron MultivitaminPNV Prenatal Health20 mg
• Folic Acid + Iron MultivitaminSancilio & Company20 mg
• Folic Acid + Iron Multivitamin Plus Vitamin APNV Prenatal Health13.5 mg
• FoligainFoligain · off the market40 mg
• FoliGrowth Ultimate Hair FormulaAdvanced Trichology30 mg
• Folivane-FTrigen Laboratories3 mg
• Folivane-OB with Ascorbic Acid PrecursorsTrigen Laboratories20 mg
• Folivane-Plus with Ascorbic Acid PrecursorsTrigen Laboratories20 mg
• FolliDerm NFNature's Plus · off the market5 mg
• Foltabs Prenatal TabletsMidlothian Laboratories · off the market20 mg
• Food Based Complete Prenatal SystemRainbow Light · off the market40 mg
• Food Based Liquid Multivitamin & Mineral ComplexCountry Life · off the market25 mg
• Food Based Women's MultiBIOVEA25 mg
• Food Based Women's Multi Comprehensive FormulaIVL Institute For Vibrant Living25 mg
• Food Multi II Without Copper, Iodine, Iron & KInnate Response Formulas25 mg
• Food Multi III BioMaxInnate Response Formulas30 mg
• Food Multi IVInnate Response Formulas40 mg
• Food-Based B-CompleteRainbow Light · off the market50 mg
• Food-Based Prenatal CompleteVitaCeutical Labs40 mg
• For A Night OutSense28 mg
• For Hair OnlyOnly Natural · off the market100 mg
• For Her Fertility SupportBluebonnet Intimate Essentials18 mg
• For Him Fertility SupportBluebonnet Intimate Essentials24 mg
• For Mature Men 50+ His Daily OneQuest · off the market7.5 mg
• For Mature Women 50+ Her Daily OneQuest · off the market5 mg

Where next?

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