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 107 of 203), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Minimal and EssentialVital Nutrients25 mg
- Miracle 2000Century Systems · off the market30 mg
- Miracle 2000 EnergyCentury Systems30 mg
- Miracle MorningUMZU50 mg
- Mito ImmuneHoltraCeuticals15 mg
- Mito SAPNFH33.33 mg
- Mito ToneDouglas Laboratories20 mg
- Mito Vive Orange FlavorMetagenics30 mg
- Mito-Cell SupportKirkman4.5 mg
- Mito-ChargerAOR Advanced Orthomolecular Research Ultra25 mg
- Mitochondria-ATPPure Encapsulations10 mg
- Mitochondrial NRGDesigns for Health50 mg
- MitocoreOrtho Molecular Products15 mg
- Mitocore LemonOrtho Molecular Products15 mg
- Mitocore StrawberryOrtho Molecular Products15 mg
- MitoDefenceSwiss BioEnergetics1.1 mg
- MiTorMM Sports Nutrition7.5 mg
- MitoToneDouglas Laboratories · off the market20 mg
- MitoTone PlusDouglas Laboratories20 mg
- MitoTraxVitaMonk25 mg
- MitoVive Orange FlavorMetagenics30 mg
- MLTI LQ Mulit-Vitamin & MineralSystemic Formulas Bio Nutriment2 mg
- MM6 For MenAmeriSciences · off the market2.25 mg
- MM6 For MenNugevity · off the market2.25 mg
- MM6 For WomenAmeriSciences · off the market2.25 mg
- MM6 For WomenNugevity · off the market2.25 mg
- MmfEngage Global2 mg
- Mns 3AdvoCare4.5 mg
- Mns CAdvoCare4.5 mg
- MNS DeltaAdvoCare1.2 mg
- Mns EAdvoCare4.5 mg
- MoabMuscle Warfare · off the market50 mg
- MochaTonix Cappuccino FlavorMarket America1.5 mg
- MochaTonix Chocolate Mocha FlavorMarket America1.5 mg
- MochaTonix Vanilla FlavorMarket America1.5 mg
- Monster Girl Mutli-V Women's Daily Multi-VitaminAngry Supplements1.5 mg
- Monster Mass Banana CremeCytoSport0.5 mg
- Monster Mass Cake BatterCytoSport0.5 mg
- Monster Mass ChocolateCytoSportin a blend
- Monster Mass Cookies 'N CremeCytoSport0.5 mg
- Monster Mass Strawberries 'N CremeCytoSportin a blend
- Monster Mass VanillaCytoSport · off the market0.5 mg
- Monster Mass Vanilla CremeCytoSportin a blend
- Monster Massive BananaCytoSport0.53 mg
- Monster Massive ChocolateCytoSport0.53 mg
- Monster Massive Cookies 'N CremeCytoSport0.53 mg
- Monster Massive StrawberryCytoSport0.53 mg
- Monster Massive VanillaCytoSport0.53 mg
- Monster Massive VanillaCytoSport Monster Series0.53 mg
- Monster Milk BananaCytoSport Monster Series1.5 mg