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 115 of 203), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- MultiFactors Men's 50+Natural Factors30 mg
- MultiFactors Women'sNatural Factors50 mg
- MultiFactors Women's 50+Natural Factors30 mg
- MultiFoodATP Science10 mg
- Multigel Caps With Lutein And LycopeneAnabolic Laboratories · off the market50 mg
- MultigenicsMetagenics30 mg
- Multigenics Chewable Outrageous Orange FlavorMetagenics1.4 mg
- Multigenics Intensive CareMetagenics22.5 mg
- Multigenics Intensive Care without IronMetagenics22.5 mg
- Multigenics Powder Natural Tangerine-Orange FlavorMetagenics15 mg
- Multigenics without IronMetagenics30 mg
- MultilexRugby10 mg
- Multilex T&MRugby15 mg
- MultiLogicsPhysioLogics · off the market75 mg
- MultiLogics Children's Animal Chews with Calcium Delicious Berry FlavorPhysioLogics · off the market1.5 mg
- MultiLogics Children's Chewable Multivitamin & Mineral Formula Natural Berry FlavorPhysioLogics · off the market0.75 mg
- MultiLogics Iron-Free Once Daily FormulaPhysioLogics · off the market75 mg
- MultiLogics MetaLogicPhysioLogics · off the market1.9 mg
- MultiMedica for MenNuMedica20 mg
- MultiMedica for WomenNuMedica20 mg
- MultiMedica without IronNuMedica20 mg
- MultiMen'sVinco50 mg
- MultiNutrientBluebonnet Super Earth25 mg
- MultiNutrient Iron FreeBluebonnet Super Earth25 mg
- MultiONEBluebonnet25 mg
- MultiOne Iron-FreeBluebonnet · off the market25 mg
- MultipleBluebonnet Rainforest Animalz · off the market1.5 mg
- Multiple Assorted Fruit FlavorsBluebonnet Rainforest Animalz1.5 mg
- Multiple Cherry FlavorBluebonnet Rainforest Animalz1.5 mg
- Multiple ChoiceSundown Naturalist1.5 mg
- Multiple Grape FlavorBluebonnet Rainforest Animalz1.5 mg
- Multiple Natural Assorted Fruit FlavorsBluebonnet Super Earth Rainforest Animalz · off the market1.5 mg
- Multiple Natural Cherry FlavorBluebonnet Super Earth Rainforest Animalz · off the market1.5 mg
- Multiple Natural Grape FlavorBluebonnet Super Earth Rainforest Animalz · off the market1.5 mg
- Multiple Natural Orange FlavorBluebonnet Super Earth Rainforest Animalz · off the market1.5 mg
- Multiple Orange FlavorBluebonnet Rainforest Animalz1.5 mg
- Multiple Vitamin & Mineral Light Orange TabletLife-Line · off the market1.5 mg
- Multiple Vitamin + Beta CaroteneFDC · off the market1.5 mg
- Multiple Vitamin FormulaHarvard Drug Group5 mg
- Multiple Vitamins & MineralsNature's Sunshine · off the market0.75 mg
- Multiple Vitamins EssentialSunmark1.5 mg
- MultiplexHoltraCeuticals50 mg
- Multiplex4Life · off the market15 mg
- Multiplex4Life Fundamentals15 mg
- Multiplex Complete Wild Berry FlavorNuMedica3 mg
- Multiplex With IronHoltraCeuticals50 mg
- Multiplex-1Integrative Therapeutics · off the market50 mg
- Multiplex-1 without added IronIntegrative Therapeutics50 mg
- Multiplex-1 without IronIntegrative Therapeutics · off the market50 mg
- Multiplex-2 Without IronIntegrative Therapeutics50 mg