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.
- Products listing it
- 12,77912,413 print an amount; 359 list it inside a blend without an amount
- Median per serving
- 20 mgmiddle half 13.2 mg to 48 mg
- FDA Daily Value
- 16 mgthe median is 125% of it
- Adult upper limit (IOM)
- 35 mg4,377 products go above it a day
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).
Products by amount of niacin per serving
12,413 products, log scale; extreme 0.2% at each end left out of the drawing.
Source: Supplement Facts rows of every product's current label, NIH ODS Dietary Supplement Label Database version 9.4.0; amounts in one measure (weight).
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.
Sources: 21 CFR 101.9(c)(8)(iv) (Daily Values); Institute of Medicine, DRI summary tables (2011) (upper limits); on reading them, the FDA's Daily Value page.
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.
| Year | Products | Median per serving |
|---|---|---|
| 2011 | 287 | 26 mg |
| 2012 | 850 | 25 mg |
| 2013 | 1,066 | 20 mg |
| 2014 | 648 | 20 mg |
| 2015 | 635 | 20 mg |
| 2016 | 566 | 20.2 mg |
| 2017 | 637 | 25 mg |
| 2018 | 565 | 20 mg |
| 2019 | 679 | 20 mg |
| 2020 | 1,065 | 20 mg |
| 2021 | 1,006 | 20 mg |
| 2022 | 1,181 | 20 mg |
| 2023 | 997 | 20 mg |
| 2024 | 1,185 | 20 mg |
| 2025 | 1,046 | 20 mg |
Source: DSLD label entry dates and amounts, current labels.
In which products and brands?
Products listing niacin by DSLD product type
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 206 of 256), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Spectrum Complete II Powder UnflavoredKirkman20 mg
- Spectrum Support One Part A Lemon Lime FlavorBrainchild Nutritionals7 mg
- Spectrum Support Pak Part A Lemon Lime FlavorBrainchild Nutritionals12 mg
- Spectrum Support Three Lemon Lime FlavorBrainchild Nutritionals15 mg
- Spectrum Support Three Part ABrainchild Nutritionals15 mg
- Spectrum Support Two Part ABrainchild Nutritionals12 mg
- SpermTonic 1000 mgHerbTonics16 mg
- SpirodreneEST Engineered Sports Technology · off the market10 mg
- Spiru-Pro Soy Protein Drink With Spirulina Natural ChocolateVitamin World20 mg
- Spiru-Pro Soy Protein Drink With Spirulina Natural VanillaVitamin World20 mg
- Spiru-Tein High Protein Cherries JubileeNature's Plus · off the market20 mg
- Spiru-Tein High Protein Energy Meal Black Cherry ChocolateNature's Plus · off the market20 mg
- Spiru-Tein High Protein Energy Meal Blueberries & CreamNature's Plus · off the market20 mg
- Spiru-Tein High Protein Energy Meal CappuccinoNature's Plus · off the market20 mg
- Spiru-Tein High Protein Energy Meal Chai LatteNature's Plus · off the market20 mg
- Spiru-Tein High Protein Energy Meal ChocolateNature's Plus · off the marketin a blend
- Spiru-Tein High Protein Energy Meal Raspberry RoyaleNature's Plus20 mg
- Spiru-Tein High Protein Energy Meal Red VelvetNature's Plus · off the market20 mg
- Spiru-Tein High Protein Energy Meal SmoresNature's Plus · off the market20 mg
- Spiru-Tein High Protein Energy Meal Strawberry BananaNature's Plus · off the market20 mg
- Spiru-Tein High Protein Energy Meal Strawberry ShortcakeNature's Plus · off the market20 mg
- Spiru-Tein High Protein High Energy Meal Chocolate Chip Cookie DoughNature's Plus · off the market20 mg
- Spiru-Tein High Protein High Energy Meal Chocolate Peanut Butter SwirlNature's Plus · off the market20 mg
- Spiru-Tein High Protein High Energy Meal Cookies & CreamNature's Plus · off the market20 mg
- Spiru-Tein High Protein High Energy Meal Creamy VanillaNature's Plus · off the market25 mg
- Spiru-Tein High Protein High Energy Meal Double Fudge CrunchNature's Plus · off the market20 mg
- Spiru-Tein High Protein High Energy Meal Egg NogNature's Plus · off the market20 mg
- Spiru-Tein High Protein High Energy Meal Exotic Red FruitNature's Plus · off the market20 mg
- Spiru-Tein High Protein High Energy Meal Gold Banana Berry BlastNature's Plus · off the market25 mg
- Spiru-Tein High Protein High Energy Meal Gold ChocolateNature's Plus · off the market25 mg
- Spiru-Tein High Protein High Energy Meal Gold Chocolate CherryNature's Plus · off the market25 mg
- Spiru-Tein High Protein High Energy Meal Gold StrawberryNature's Plus · off the market25 mg
- Spiru-Tein High Protein High Energy Meal Gold Tropical FruitNature's Plus · off the market25 mg
- Spiru-Tein High Protein High Energy Meal Gold VanillaNature's Plus · off the market25 mg
- Spiru-Tein High Protein High Energy Meal Nutty Berry BurstNature's Plus · off the market20 mg
- Spiru-Tein High Protein High Energy Meal Peaches & CreamNature's Plus · off the market20 mg
- Spiru-Tein High Protein High Energy Meal Pina ColadaNature's Plus · off the market20 mg
- Spiru-Tein High Protein High Energy Meal StrawberryNature's Plus · off the market20 mg
- Spiru-Tein High Protein High Energy Meal StrawberryNaturesPlus · off the market20 mg
- Spiru-Tein High Protein High Energy Meal VanillaNature's Plus · off the market20 mg
- Spiru-Tein High Protein High Energy Tangerine DreamNature's Plus · off the market20 mg
- Spiru-Tein High Protein High Energy Tropical FruitNature's Plus · off the market20 mg
- Spiru-Tein High Protein High Energy Wafers BananaNature's Plus · off the market20 mg
- Spiru-Tein High Protein High Energy Wafers ChocolateNature's Plus · off the market20 mg
- Spiru-Tein High Protein High Energy Wafers StrawberryNature's Plus · off the market20 mg
- Spiru-Tein High Protein High Energy Wafers VanillaNature's Plus · off the market20 mg
- Spiru-Tein Hot Cocoa With MarshmallowsNature's Plus · off the market0.1 mg as transcribed, likely a slip
- Spiru-Tein Junior ChocolateNature's Plus · off the market10 mg
- Spiru-Tein Plus Delicious VanillaNature's Plus · off the market20 mg
- Spiru-Tein Protein Energy Meal BananaNature's Plus · off the market20 mg