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

• High Potency Soft MultipleKAL60 mg
• High Potency Softgel MultiSwanson Premium Brand · off the market60 mg
• High Potency Softgel MultiSwanson60 mg
• High Potency Softgel Multi without IronSwanson · off the market60 mg
• High Potency Softgel Multi without IronSwanson Premium Brand · off the market60 mg
• High Potency Super B Maxi ComplexSundown Naturals200 mg
• High Potency Super B-50Natures Plus · off the market50 mg
• High Potency Sustained Release Just VitaminsNature's Plus · off the market80 mg
• High Potency Time Release Ultra Vita Man For MenPuritan's Pride · off the market50 mg
• High Potency Timed Release Ultra Man 50 PlusPuritan's Pride · off the market30 mg
• High Potency Ultra Freeda with IronFreeda100 mg
• High Potency Ultra ManNature's Bounty Platinum50 mg
• High Potency Ultra One Daily Caps Iron Free With Beta-CaroteneNature's Plus · off the market100 mg
• High Potency Ultra One Daily Caps with Beta-CaroteneNatures Plus · off the market100 mg
• High Potency Ultra WomanNature's Bounty Platinum50 mg
• High Potency Vita-Lea Gold With Vitamin KShaklee30 mg
• High Potency Vita-Lea MenShaklee20 mg
• High Potency Vita-Lea WomenShaklee20 mg
• High Potency Vitamin B ComplexLake Avenue Nutrition140 mg
• High Potency Vitamin B-Complex Chewables Natural Strawberry FlavorSolaray50 mg
• High Potency Vitamin B100 ComplexMeijer100 mg
• High RhodeKin Euphorics5 mg
• High Strength B ComplexHigher Nature50 mg
• High Strength Multivitamin & MineralHigher Nature40 mg
• High T WomenHigh T4 mg
• Higher MindSource Naturals164 mg
• Higher Mind With PhosphatidylserineSource Naturals160 mg
• Highly Absorbable Stress-BHealthy Choice Naturals50 mg
• Hiit Aminos Kiwi & Strawberry1 Up Nutrition10 mg
• Hiit Aminos Passion Fruit1 Up Nutrition10 mg
• HimKaruna40 mg
• HisWellthy Nutraceuticals7.5 mg
• His VigorDr. Tobias10 mg
• Hist ResetPure Encapsulations20 mg
• Histamine Block PlusSeeking Health25 mg
• HLC Child + Multi Natural Black Currant FlavorPharmax7.5 mg
• HLC Child + Multi Natural Blackcurrant FlavorPharmax · off the market7.5 mg
• HLC Immunity + Pro Natural Orange FlavorPharmax5 mg
• HLC ImmunobioticsPharmax18 mg
• HLC Toddler + Pro Mixed Berry FlavorPharmax8 mg
• HMF Immune Powder Natural Mixed Berry FlavorGenestra Brands8 mg
• Homocysteine ReduxNutri-West20 mg
• Hooligan Bare Knuckle Jungle JuiceApollon Nutrition25 mg
• Hooligan Bare Knuckle Peach Iced TeaApollon Nutrition12.5 mg
• Hooligan Extreme Pre-Workout Formula Pain KillerApollon Nutrition45 mg
• Hooligan Extreme Pre-Workout Formula Strawberry MargaritaApollon Nutrition13 mg
• HormifyHormify1 mg
• Hormone Balancing EssentialsGottfried Institute80 mg
• Horny Goat WeedProlab · off the market80 mg
• Horny Goat Weed Spraynaturaltreasures4 mg

Where next?

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