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 189 of 203), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Vitamin B ComplexHigher Nature50 mg
- Vitamin B Complex1 Body · off the market25 mg
- Vitamin B ComplexSheer Strength Labs25 mg
- Vitamin B ComplexCalifornia Gold Nutrition24 mg
- Vitamin B ComplexPurest Vantage100 mg
- Vitamin B ComplexNew Chapter1.2 mg
- Vitamin B ComplexStaunch Labs · off the market60 mg
- Vitamin B ComplexBIOVEA1.5 mg
- Vitamin B ComplexProfessional Botanicals40 mg
- Vitamin B ComplexPattern Wellness100 mg
- Vitamin B ComplexNutricost60 mg
- Vitamin B ComplexVISPURA1.65 mg
- Vitamin B ComplexPure Herbs33 mg
- Vitamin B Complex 350 mgUniversal Nutrition / Universal Naturals50 mg
- Vitamin B Complex 461 mgDr. Clark Research Association Dr. Clark Zentrum100 mg
- Vitamin B Complex 50Schiff50 mg
- Vitamin B Complex High Potency B Vitaminsup&up50 mg
- Vitamin B Complex MaxiKroger15 mg
- Vitamin B Complex PlusSwiss BioEnergetics20 mg
- Vitamin B Complex With B12, B6 & Folic AcidL.A. Naturals1.5 mg
- Vitamin B Complex with BenfotiamineDr. Mercola1.5 mg
- Vitamin B Complex with BiotinNatures Nectar50 mg
- Vitamin B Complex with CLongs Wellness · off the market15 mg
- Vitamin B Complex with ElectrolytesMeijer1.5 mg
- Vitamin B Complex with Vitamin CMeijer15 mg
- Vitamin B Dual-ActionNutrilite3 mg
- Vitamin B Tablets (Adults)KR · off the market13 mg
- Vitamin B+Zemvelo10 mg
- Vitamin B-1Indiana Botanic Gardens · off the market250 mg
- Vitamin B-1Solaray · off the market100 mg
- Vitamin B-1 (Thiamin) 100 mgGeri-Care · off the market100 mg
- Vitamin B-1 100 mgNature's Bounty100 mg
- Vitamin B-1 100 mgPhysician's Preference · off the market100 mg
- Vitamin B-1 100 mgPuritan's Pride Premium100 mg
- Vitamin B-1 100 mgRite Aid Pharmacy100 mg
- Vitamin B-1 100 mgRugby100 mg
- Vitamin B-1 100 mgNature's Plus · off the market100 mg
- Vitamin B-1 100 mgNutraBio · off the market100 mg
- Vitamin B-1 100 mgFoods Plus100 mg
- Vitamin B-1 100 mgSwanson Premium Brand · off the market100 mg
- Vitamin B-1 100 mgVoitenko Wellness100 mg
- Vitamin B-1 100 mgVitalBulk100 mg
- Vitamin B-1 100 mgMarlex Pharmaceuticals100 mg
- Vitamin B-1 100 mgBest Naturals100 mg
- Vitamin B-1 100 mgAvPAK100 mg
- Vitamin B-1 100 mgNature's Blend100 mg
- Vitamin B-1 100 mgMajor100 mg
- Vitamin B-1 100 mgLuckyVitamin100 mg
- Vitamin B-1 100 mgRite Aid100 mg
- Vitamin B-1 100 mgSolaray100 mg