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 64 of 203), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Flintstones ToddlerBayer0.7 mg
- Flintstones with IronBayer0.49 mg
- Flora IronFlora1.1 mg
- Floradix Iron + Herbs LiquidFlora2.25 mg
- Floradix Iron TabletsFlora0.63 mg
- Floravital Iron + HerbsFloradix2.25 mg
- Floriva Plus Liquid Drops 0.25 mg Natural Berry FlavorBonGeo Pharmaceuticals0.5 mg
- FlybyFlyby Ventures50 mg
- FM Support PackDouglas Laboratories50 mg
- FocusCognizance3 mg
- FocusQualia6 mg
- FocusHost Defense Mushrooms Mycobenefits3 mg
- Focus Attention PowderNature's Sunshine · off the market0.3 mg
- Focus Complex With Neuro-PSVitamin World3 mg
- Focus FactorFOCUSfactor · off the market3 mg
- Focus FactorFocus Factor3 mg
- Focus Factor Extra StrengthFocus Factor4.5 mg
- Focus Factor Max StrengthFocus Factor4.5 mg
- Focus Factor Pro Max NootropicFocus Factor0.75 mg
- Focus Factor Sports Nootropic Fruit PunchFocus Factor1.2 mg
- Focus FastEnyotics Health Sciences33.3 mg
- Focus Fast ExtremeEnyotics Health Sciences33.3 mg
- Focus FormulaVitabase6 mg
- Focus NowRise-N-Shine1.5 mg
- Focus SupportCovalent Medical0.7 mg
- Focus!Health Logics1 mg
- FocusAid Brain Boost Melon MateFOCUSAID1.2 mg
- FocusAid Brain Boost Watermelon MintFOCUSAID1.2 mg
- FocusAid Zero Brain Boost Melon MateFOCUSAID1.2 mg
- FocusAllHealthy Natural Solutions5 mg
- FocusFactorFOCUSfactor3 mg
- FOCUSfactorFocus Factor3 mg
- Folate MethylationPriority One Nutritional Supplements49 mg
- Folbee PlusBreckenridge Pharmaceutical1.5 mg
- FolexinFolexin6 mg
- Folic Acid + Iron MultivitaminPNV Prenatal Health2 mg
- Folic Acid + Iron MultivitaminSancilio & Company2 mg
- Folic Acid + Iron Multivitamin Plus Vitamin APNV Prenatal Health1.05 mg
- Folic-K CapsulesFoxland Pharmaceuticals15 mg
- Folica-BEAxis Pharmaceutics Inc.15 mg
- Folica-VAxis Pharmaceutics Inc.15 mg
- FoliGrowth Ultimate Hair FormulaAdvanced Trichology30 mg
- Folivane-OB with Ascorbic Acid PrecursorsTrigen Laboratories5 mg
- Folivane-Plus with Ascorbic Acid PrecursorsTrigen Laboratories5 mg
- FolliDerm NFNature's Plus · off the market0.75 mg
- Foltabs Prenatal TabletsMidlothian Laboratories · off the market3 mg
- Food Based Complete Prenatal SystemRainbow Light · off the market30 mg
- Food Based Liquid Multivitamin & Mineral ComplexCountry Life · off the market25 mg
- Food Based Women's MultiBIOVEA25 mg
- Food Based Women's Multi Comprehensive FormulaIVL Institute For Vibrant Living25 mg