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 154 of 203), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Select Meal DF VanillaMoss Nutrition2 mg
- Select Meal VanillaMoss Nutrition2 mg
- Select-OBEverett Laboratories1.6 mg
- Select-OB +DHAEverett Laboratories1.6 mg
- Select-OB Berry Flavored CapletExeltis USA1.6 mg
- Select-OB+DHAEverett Laboratories1.6 mg
- Seneca Nootropic ComplexIntelligent Labs1.1 mg
- Senior Complete Iron FreeDr. Becker's BioNutrients3 mg
- Senior Eye VisionVitamin World · off the market10 mg
- Senior Eye VisionGood 'N Natural · off the market5 mg
- Senior Eye VisionPuritan's Pride5 mg
- Senior Eye Vision With LuteinGood 'N Natural · off the market10 mg
- Senior Eye Vision with LutigoldVitamin World · off the market5 mg
- Senior Men's PackDouglas Laboratories50 mg
- Senior SymmetryVitanica50 mg
- Senior TabsGeri-Care1.5 mg
- Senior Vitestnvitamins1.5 mg
- Senior Women's PackDouglas Laboratories50 mg
- Seniority MultivitaminCountry Life3 mg
- Sense For A Night OutSense24 mg
- Sense For CholesterolSense5.5 mg
- Sense For City LivingSense7 mg
- Sense For Nicotine LoversSense7 mg
- Sense For Weight WarriorsSense0.55 mg
- Sensitivi-TLifeSeasons25 mg
- Sentry21st Century1.5 mg
- SentryLeader1.5 mg
- Sentry Adults21st Century1.5 mg
- Sentry Energy21st Century4.5 mg
- Sentry Heart21st Century0.75 mg
- Sentry Men21st Century1.2 mg
- Sentry Senior21st Century1.5 mg
- Sentry Senior Adults 50+21st Century1.5 mg
- Sentry Senior Men's 50+21st Century1.5 mg
- Sentry Senior Women's 50+21st Century1.1 mg
- Sentry Women21st Century1.1 mg
- SerenemyDNAhealth5 mg
- Serene GoddessWarp Wellness12 mg
- SerenityEmeritt · off the market2 mg
- SerenityTransformations Weight Loss0.6 mg
- Serious Mass BananaOptimum Nutrition4.8 mg
- Serious Mass BananaON Optimum Nutrition4.8 mg
- Serious Mass ChocolateON Optimum Nutrition · off the market4.8 mg
- Serious Mass ChocolateOptimum Nutrition4.8 mg
- Serious Mass Chocolate Peanut ButterON Optimum Nutrition · off the market5.1 mg
- Serious Mass Chocolate Peanut ButterOptimum Nutrition4.8 mg
- Serious Mass StrawberryOptimum Nutrition4.8 mg
- Serious Mass StrawberryON Optimum Nutrition4.8 mg
- Serious Mass VanillaON Optimum Nutrition · off the market5.1 mg
- Serious Mass VanillaOptimum Nutrition4.8 mg