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

• Collagen Building Protein Peptides Salted Caramel FlavorSunwarrior2 mg
• Collagen Building Protein Peptides Tahitian Vanilla FlavorSunwarrior2 mg
• Collagen Building Protein Peptides UnflavoredSunwarrior3 mg
• Collagen Effervescent Tablets Peach MangoTrace Minerals4 mg
• Collagen Endurance Plus Black Cherry FlavoredGreat Lakes Gelatin Co.10 mg
• Collagen FitThorne125 mg
• Collagen Peptides Beauty Edition UnflavoredVital Proteins · off the market8 mg
• Collagen Peptides Natural UnflavoredFREZZOR0.5 mg
• Collagen Peptides Powder 300g + Vitamins UnflavoredFull Life32 mg
• Collagen Plus Passion Berry FlavoredThorne125 mg
• Collagen Protein Broth Curcumin ChiliFREZZOR1.2 mg
• Collagen Protein Broth Lavender ChamomileFREZZOR1.2 mg
• Collagen Protein Broth Lemon GingerFREZZOR1.2 mg
• Collagen Protein Broth Seasonal HerbsFREZZOR1.2 mg
• Collagen Protein Shake Vanilla flavoryoutheory20 mg
• Collagen Renew SupplementDerm Exclusive24.5 mg
• Collagen Sport Belgian ChocolateNeoCell Sport6 mg
• Collagen Sport French VanillaNeoCell Sport6 mg
• CollagenellDNA Dynamic Nutritional Associates10 mg
• Combat StressLidtke Military20 mg
• Compleat Multivitamin/MineralTriCare Prenatal20 mg
• Complete21st Century Zoo Friends10 mg
• CompleteWestern Family · off the market20 mg
• CompleteKroger20 mg
• CompletePrimal Pharm30 mg
• Complete 50+ Multivitamin-Multimineral SupplementWelby Health20 mg
• Complete Activ-B-ComplexVera's Formulations · off the market100 mg
• Complete Advanced FormulaSunmark20 mg
• Complete Advanced Formula USPSunmark20 mg
• Complete BGood 'N Natural · off the market25 mg
• Complete BPuritan's Pride25 mg
• Complete B 100 mgNatural Factors100 mg
• Complete B With Choline & Inositol B-Complex VitaminGood 'N Natural · off the market25 mg
• Complete B-ComplexLife Extension100 mg
• Complete B-ComplexVitamin World25 mg
• Complete B-ComplexRainbow Light100 mg
• Complete Beauty ComplexMeaningful Beauty Wellness45 mg
• Complete Body Cleansing Program Natural Citrus FlavorGNC Preventive Nutritionin a blend
• Complete BraineXplicit Supplements12.5 mg
• Complete Chewable Vitamin & Mineral Supplement Mixed BerryBariatric Fusion5 mg
• Complete Chewable Vitamin & Mineral Supplement Orange CreamBariatric Fusion5 mg
• Complete Chewable Vitamin & Mineral Supplement StrawberryBariatric Fusion5 mg
• Complete Chewable Vitamin & Mineral Supplement TropicalBariatric Fusion5 mg
• Complete Chewable Vitamin & Mineral Supplement Very BerryBariatric Fusion5 mg
• Complete Chewable Vitamin & Mineral Supplement Wild CherryBariatric Fusion5 mg
• Complete Children's Chewable Wild CherryTrace Minerals Research · off the market10 mg
• Complete Children's Chewable Wild Cherry FlavorTrace Minerals10 mg
• Complete Daily With IronSundown Naturals25 mg
• Complete Foods MultiTrace Minerals Research30 mg
• Complete for Men 50+ShopRite20 mg

Where next?

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