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 16 of 203), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Animal Shapes with IronMajor1.5 mg
- Annihil8Biogear Begin Series · off the marketin a blend
- Anti-AgingIsotonix Essentials6.5 mg
- Anti-Aging Collagen Protein Shake Vanillayoutheory · off the market1.5 mg
- Anti-Aging FormulaMerry Clinic10 mg
- Anti-Alcohol Antioxidants With HepatoProtection ComplexLife Extension100 mg
- Anti-Alcohol ComplexLife Extension100 mg
- Anti-Alcohol HepatoProtection ComplexLife Extension100 mg
- Anti-Alcohol With HepatoProtection ComplexLife Extension100 mg
- Anti-AnxietyInvictus Labs · off the market12 mg
- Anti-FatigueKroeger Herb Products Co.5 mg
- Anti-Gray 9000Justified Laboratories6 mg
- Anti-OxidantDouglas Laboratories · off the market40 mg
- Anti-OxidantThorne Research · off the market80 mg
- Anti-OxidantP2Life1.5 mg
- Anti-Stress + B-ComplexWonder Laboratories15.4 mg
- Anti-Stress B-Complex EssentialsFoster Regal15.4 mg
- AntiOx OriginalAllergy Research Group19 mg
- AntiOx OriginalNutriCology19 mg
- Antioxidant BlendThe Vitamin Shoppe · off the market25 mg
- Anutra GrainAnutra0.2 mg
- Anxiety BalancePriority One Nutritional Supplements25 mg
- Anxiety FormulaiPro Organic Supplements · off the market12 mg
- Anxiety Formula 900 mgNutriSuppz12 mg
- Anxiety FreeRidgeCrest Herbals25 mg
- AnxiousLessNature's Sunshine5 mg
- ApetaminTIL Healthcare · off the market2 mg
- Apetigen PlusKramer Novis10 mg
- Apetima's Plus BiokemicalRazel Laboratories10 mg
- Appebon Kid Syrup with IronUNILAB0.6 mg
- Appetite BoostThompson5.3 mg
- Appetite SuppressantYes You Can!2 mg
- Appetrex ControlGNC Total Lean1.5 mg
- Aqua-B6Anabolic Laboratories · off the market5 mg
- AquADEKsActavis Pharma · off the market0.6 mg
- Aquadeks Chewable TabletsYasoo Health · off the market1.5 mg
- Aquadeks Pediatric LiquidYasoo Health · off the market1.2 mg
- Aquadeks SoftgelsYasoo Health · off the market1.5 mg
- Aqueous Multi-PlusBiotics Research Corporation1.5 mg
- AREDS 2 Plus Multi-Vitamin TabletEyePromise1.5 mg
- AREDS 2 Plus TabletEyePromise · off the market1.5 mg
- AREDS 2 Plus TabletEye Promise · off the market1.5 mg
- ArginCorMetagenics · off the market10 mg
- ArginMaxGNC Women's1.5 mg
- ArginMaxGNC1.5 mg
- ArginMaxGNC Men's1.5 mg
- ArginMax for MenThe Daily Wellness Company1.5 mg
- ArginMax for WomenThe Daily Wellness Company1.5 mg
- ArginMax Timed-ReleaseGNC Men's · off the market1.5 mg
- ARM Plus+ Fruit SmoothieMax Muscle Nutrition1.7 mg