vitamin
Thiamin supplements
Half of the 9,830 thiamin supplements in the NIH label database that print an amount list 5 mg or less per serving; the middle half list 1.5 mg to 25 mg (DSLD version 9.4.0, January 2026). The 103 products whose only supplement ingredient is thiamin list a median of 100 mg.
- Products listing it
- 10,1239,830 print an amount; 277 list it inside a blend without an amount
- Median per serving
- 5 mgmiddle half 1.5 mg to 25 mg
- FDA Daily Value
- 1.2 mgthe median is 417% of it
How much thiamin do supplements contain?
The median product lists 5 mg per serving. One in ten lists 0.6 mg or less, one in ten 50 mg or more. The amount printed most often is 1.5 mg (1,163 products).
Products by amount of thiamin per serving
9,830 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 thiamin is 1.2 mg (adults and children 4 and older). The median product gives 417% of it per serving; the 90th percentile 4167%.
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 thiamin?
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).
- Super Potency Vitamin B 1 (Thiamin) 500 mgSolgar500 mg
- Vitamin B1 High Potency 500 mgBIOVEA500 mg
- Vitamin B1 500 mgNutraBio500 mg
- Vitamin B1 500 mgDr. Clark Store500 mg
- Vitamin B1 500 mgDr. Clark Research Association Dr. Clark Zentrum500 mg
- Vitamin B-1 500 mgVitalBulk500 mg
- Vitamin B-1 500 mgBest Naturals500 mg
- Vitamin B1 500 mgVitamatic500 mg
Have the amounts changed over the years?
Products whose current label entered DSLD in 2011 list a median of 5 mg; those entered in 2025, 5 mg.
| Year | Products | Median per serving |
|---|---|---|
| 2011 | 246 | 5 mg |
| 2012 | 754 | 7.5 mg |
| 2013 | 827 | 5 mg |
| 2014 | 490 | 3 mg |
| 2015 | 457 | 3 mg |
| 2016 | 449 | 5 mg |
| 2017 | 490 | 7.75 mg |
| 2018 | 398 | 2.5 mg |
| 2019 | 536 | 3 mg |
| 2020 | 900 | 5 mg |
| 2021 | 819 | 4 mg |
| 2022 | 934 | 3 mg |
| 2023 | 819 | 4.8 mg |
| 2024 | 918 | 5 mg |
| 2025 | 793 | 5 mg |
Source: DSLD label entry dates and amounts, current labels.
In which products and brands?
Products listing thiamin by DSLD product type
Brands listing it most: Douglas Laboratories (245), Nature's Way (221), Nature's Plus (207), Country Life (85), ProCaps Laboratories (79), Bronson (78), Rainbow Light (76), NOW (70), Metagenics (64), New Chapter (62).
Every product listing thiamin
10,123 products, A to Z by name (page 66 of 203), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Formula 75 Multi Vitamin-MineralWonder Laboratories75 mg
- Formula 784DC1.5 mg
- Formula 784Carolina Compounding Pharmacy & Health Center1.5 mg
- Formula 814DC1.5 mg
- Formula IVGNLD Nutritionals · off the market10 mg
- Formula IVNeoLife Nutritionals10 mg
- Formula IV Food SupplementGNLD Nutritionals · off the market10 mg
- Formula IV PlusNeoLife Nutritionals10 mg
- Formula V VM-75Solgar75 mg
- Formula V VM-75 TMSolgar · off the market75 mg
- Formula VM-2000Solgar100 mg
- Formula VM-75Solgar75 mg
- Formula VM-PrimeSolgar · off the market25 mg
- Formula VM-Prime For Adults 50+Solgar · off the market25 mg
- Formulation OneSuperior Labs1.5 mg
- Forte VF Q10Farmacias de Similares S.A. de C.Vin a blend
- Forti-FlaxBarlean's Organic Oils · off the market0.246 mg
- Forti-FlaxBarlean's0.246 mg
- Fortified Vitamin And Mineral Insurance FormulaBronson Laboratories · off the market3 mg
- Fortified Vitamin and Mineral Insurance FormulaBronson3 mg
- Fortify Dual Action Energy Support 20 BillionNature's Way2.4 mg
- FortitudeTo The Woods5 mg
- ForwardDr. Whitaker25 mg
- Forward Gold Brain and Body MultinutrientDr. Whitaker25 mg
- Forward Gold Brain and Body MultinutrientWhitaker Nutrition25 mg
- Forward MultinutrientWhitaker Nutrition25 mg
- FosfreeMission Pharmacal9 mg
- Foskrol SchoolBiokemical5.4 mg
- Foundation EssentialsXYMOGEN10 mg
- Foundation Essentials for MenNuMedica · off the market10 mg
- Foundation Essentials For WomenNuMedica · off the market10 mg
- Foundation Essentials for Women Multimedica for WomenNuMedica10 mg
- Foward MultinutrientWhitaker Nutrition25 mg
- Freak ShowRich Piana 5% Nutrition100 mg
- FreedaviteFreeda1.5 mg
- Friendly-C 500 mgBIOVEA0.75 mg
- From the EarthThe Vitamin Shoppe25 mg
- From The Earth No-IronThe Vitamin Shoppe12.5 mg
- Frosted Cinnamon Caramel Crunch Nutrition BarsiSatoriin a blend
- Fruit & Veggies 5Nature's Plus Source of Life Animal Parade · off the market0.02 mg
- Fruit PunchAdvoCare3 mg
- Fruit Punch Cleansing LiquidPurified Brand · off the market2.5 mg
- Fruitein Banana Orange CremeNature's Plus · off the market1.5 mg
- Fruitein Luscious Blue FruitNature's Plus · off the market1.5 mg
- Fruitein RainbowNature's Plus · off the market1.5 mg
- Fruitein Revitalizing Green Foods Natural Tropical Fruit FlavorNature's Plus · off the market1.5 mg
- Fruitien Acai 2500 mgNature's Plus · off the market1.5 mg
- Fruitien High Protein Energy Shake Exotic Red FruitNature's Plus · off the market1.5 mg
- Fruity VitesDouglas Laboratories3 mg
- Frutol with Full Spectrum MultivitaminsPharmax0.7 mg