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 4 of 203), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Acai Energy Boost Natural Tropical Punch FlavorHealthy To Go! · off the market1 mg
- Acai Natural Energy BoostToGo brands · off the market0.35 mg
- Acceler8 GrapePure Advantage1.5 mg
- Accell Meal Complete SuperfruitSystemic Formulas10 mg
- Accell TherapeuticSystemic Formulas45 mg
- Acetyl L-CarnitineDymatize Nutrition · off the market2.5 mg
- Acetyl L-CarnitineDymatize · off the market2.5 mg
- Acetyl-Choline Brain FoodNS Natural Stacks64 mg
- Acid-Alkaline Balance Formula One Alkaline Blood (Slow Oxidizers)Douglas Laboratories10 mg
- Action B-100Country Life · off the market100 mg
- Action B-50 CapsCountry Life50 mg
- Activated B w/SRTJigsaw Health25 mg
- Activated B-ComplexPure Prescriptions100 mg
- Activated B-ComplexIsotonix2 mg
- Activated B-Complex High Bioavailability FormulaSwanson Ultra · off the market25 mg
- Activated B-Complex High Potency and BioavailabilitySwanson54.4 mg
- Activated B12 ComplexAdaptogen Research50 mg
- Activated Vitamin B-1 Cocarboxylase 16 mgSwanson Premium Brand16 mg
- ActivatorNutri-Spec1.5 mg
- ActiveComplete Active50 mg
- ActiveGNC Women's Ultra Mega50 mg
- Active 50+ Once Daily Multivitamin & Mineral Plus Probiotics (Digestive Support)Trader Joe's10 mg
- Active 55Buried Treasure Liquid Nutrients40 mg
- Active 55 Plus Senior ComplexBuried Treasure · off the market40 mg
- Active Adult 50+Rainbow Light · off the market8 mg
- Active Adult 50+ MultivitaminRainbow Light · off the market8 mg
- Active B CompleteOnnit151.5 mg as transcribed, likely a slip
- Active B ComplexProThera · off the market50 mg
- Active B ComplexGenestra Brands50 mg
- Active B ComplexKlaire Labs · off the market50 mg
- Active B ComplexCarotec150 mg
- Active B ComplexCarlson50 mg
- Active B-ComplexIntegrative Therapeutics50 mg
- Active ChocolateGNC Women's Ultra Mega50 mg
- Active FEAllegis Pharmaceuticals4 mg
- Active Health TeenRainbow Light · off the market30 mg
- Active Health Teen MultivitaminRainbow Light · off the market30 mg
- Active Kids CompleteOneSource · off the market0.8 mg
- Active Kids Plus Extra COneSource · off the market1 mg
- Active ManMET-Rx60 mg
- Active Man's FormulaVitabase50 mg
- Active Men's Alpha-MultiVivid Health Nutrition30 mg
- Active Methylated B ComplexApproved Science50 mg
- Active Milk ChocolateGNC Women's Ultra Mega50 mg
- Active Mixed BerryGNC Ultra Mega Green25 mg
- Active MultiFINAFLEX50 mg
- Active Multi PacksMET-Rx50 mg
- Active Multi ViteGenestra Brands24 mg
- Active Multi Vite Gummies Natural Raspberry-Lemon FlavorGenestra Brands1.5 mg
- Active Multi Vite Without Vitamin AGenestra Brands0 mg as transcribed, likely a slip