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 15 of 203), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- AminopowerplusTruehope1.6 mg
- AMPED Hydrate Blue RaspberryIsagenix0.12 mg
- AMPED Hydrate CoconutIsagenix0.12 mg
- AMPED Hydrate Lemon LimeIsagenix0.12 mg
- AMPED Hydrate OrangeIsagenix0.12 mg
- AmphetaleanBeast60 mg
- Amplified Endurance Booster Blue RaspberryGNC Pro Performance AMP0.75 mg
- Amplified Endurance Booster OrangeGNC Pro Performance AMP0.75 mg
- Amplified Muscle Meal ChocolateGNC Pro Performance AMP0.38 mg
- Amplified Muscle Meal VanillaGNC Pro Performance AMP0.38 mg
- Amplified N.O. Loaded Blue RaspberryGNC Pro Performance AMP Advanced Muscle Performance0.75 mg
- Amplified N.O. Loaded Fruit PunchGNC Pro Performance AMP Advanced Muscle Performance0.75 mg
- Amplify XL Cinnamon ToastPMD0.15 mg
- Amplify XL Double Chocolate ExplosionPMD Platinum0.15 mg
- Amplify XL Double Chocolate ExplosionPMD0.15 mg
- Amplify XL Mango ManiaPMD0.15 mg
- Amplify XL Peanut Butter CupPMD0.15 mg
- Amplify XL Strawberry SlamPMD Platinum0.15 mg
- Amplify XL Strawberry SlamPMD0.15 mg
- Amplify XL Toffee MacchiatoPMD0.15 mg
- Amplify XL Vanilla FlexPMD Platinum0.15 mg
- Amplify XL Vanilla FlexPMD0.15 mg
- Anabolic Halo Hardcore Pro Series Arctic Fruit PunchMuscleTech0.5 mg
- Anabolic Halo Hardcore Pro Series Blue Raspberry GlacierMuscleTech0.5 mg
- Anabolic Halo Hardcore Pro Series Orange AvalancheMuscleTech0.5 mg
- AnabolinexALLMAX15 mg
- Anatherm Heat Metabolics StimulatorNatureSmart25 mg
- AnaviteGaspari Nutrition15 mg
- Anavite OrangeGaspari Nutrition15 mg
- Anavite XTGaspari Nutrition15 mg
- Ancient Multi Immune+Ancient Nutrition18.7 mg
- Ancient Multi Men's 40+Ancient Nutrition · off the market6 mg
- Ancient Multi Men's 40+ Once DailyAncient Nutrition · off the market2.1 mg
- Ancient Multi Men's Once DailyAncient Nutrition · off the market2.1 mg
- Ancient Multi PrenatalAncient Nutrition · off the market4 mg
- Ancient Multi Women's 40+Ancient Nutrition5.9 mg
- Ancient Multi Women's 40+ Once DailyAncient Nutrition · off the market2.1 mg
- Ancient Multi Women's Once DailyAncient Nutrition2.1 mg
- Ancient Nutrients B-ComplexAncient Nutrition5.2 mg
- Androvite for MenOptimox Corporation · off the market50 mg
- Androvite for MenOptimox50 mg
- Animal PakAnimal76 mg
- Animal Pak Cherry Berry FlavorAnimal · off the market76 mg
- Animal Pak Cherry Bomb FlavorAnimal76 mg
- Animal Pak Orange Crushed FlavorAnimal76 mg
- Animal Pak Orange FlavorAnimal · off the market76 mg
- Animal ShapesMajor1.05 mg
- Animal Shapes Complete With CholineSunmark0.75 mg
- Animal Shapes Kids' FirstSunmark1.05 mg
- Animal Shapes With IronSunmark1.05 mg