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 186 of 203), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Vision SupportVimerson Health8 mg
- Vision Support 5000Justified Laboratories8 mg
- Vision Support IIAOR Advanced Orthomolecular Research Advanced160 mg
- Vision Support PlusU.S. Longevity Institute · off the market1.9 mg
- VisionGuardNatural Cell Supplements8 mg
- VisionPro NutrientsPure Encapsulations5 mg
- VisionPro Nutrients without ZincPure Encapsulations5 mg
- Visivites Eye & MultiWindmill Comparables · off the market1.5 mg
- Visivites Eye & MultiWindmill Natural Vitamins1.5 mg
- Vit-Min 100NOW100 mg
- Vit-Min 75+NOW75 mg
- Vit-Min 75+ Multi Vitamin & MineralNOW · off the market75 mg
- Vit-Power CompleteNatural Guardian · off the market50 mg
- VitaJYM · off the market100 mg
- VitaJYM Supplement Science100 mg
- Vita Anti-AntioxidantUSANA · off the market15 mg
- Vita AntioxidantUSANA15 mg
- Vita BuildMuscleTech Pro Series9 mg
- Vita Chel PackDouglas Laboratories93 mg
- Vita ChewsNew Sun0.75 mg
- Vita Freak VfPharmaFreak Pf1.5 mg
- Vita Freak Vf PacksPharmaFreak1.5 mg
- Vita JYMJYM Supplement Science · off the market100 mg
- Vita JYMJYM · off the market100 mg
- Vita LifeS4L Slim4Life2.25 mg
- Vita Min Herb Men's MultivitaminPure Synergy10 mg
- Vita Min Herb Women's MultivitaminPure Synergy10 mg
- Vita Mom Advanced Prenatal FormulaKAL7.1 mg
- Vita Mom Prenatal FormulaKAL7.5 mg
- Vita SuperMedi Weightloss20 mg
- Vita XTJacked Factory JF50 mg
- Vita-AntioxidantUSANA CellSentials · off the market15 mg
- Vita-Bee with CRugby15 mg
- Vita-BeticVita-Betic3 mg
- Vita-Big KidsDouglas Laboratories10 mg
- Vita-BrewRapid Fire0.7 mg
- Vita-Chel PlusDouglas Laboratories80 mg
- Vita-HiBasic Organics · off the market75 mg
- Vita-KidsDouglas Laboratories3 mg
- Vita-Lea Gold Multi+ With Vitamin KShaklee2.25 mg
- Vita-Lea Gold Multi+ Without Vitamin KShaklee2.25 mg
- Vita-Lea Gold Vitamin K FormulaShaklee · off the market2.25 mg
- Vita-Lea Gold with Vitamin KShaklee · off the market2.25 mg
- Vita-Lea Gold without Vitamin KShaklee · off the market2.25 mg
- Vita-Lea Gold without Vitamin K FormulaShaklee2.25 mg
- Vita-Lea Iron FormulaShaklee1.5 mg
- Vita-Lea MenShaklee · off the market1.5 mg
- Vita-Lea Men's Multi+Shaklee1.5 mg
- Vita-Lea Ocean WondersShakleekids1.5 mg
- Vita-Lea without Iron FormulaShaklee1.5 mg