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 199 of 203), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Women's Menopause FormulaBayer One A Day3 mg
- Women's MultiVitaCeutical Labs25 mg
- Women's MultiVitamer Laboratories25 mg
- Women's MultiInnate Response Formulas2.5 mg
- Women's MultiNatrol Gummies · off the market0.7 mg
- Women's MultiJarrow Formulas · off the market15 mg
- Women's MultiNatures Plus Source of Life Garden · off the market3 mg
- Women's MultiSmartyPants0.12 mg
- Women's MultiNobi Nutrition1.2 mg
- Women's MultiNatures Plus AgeLoss · off the market30 mg
- Women's MultiNature's Bounty1.5 mg
- Women's MultiNature Made1.5 mg
- Women's MultiLuckyVitamin25 mg
- Women's MultiNaturesPlus Source of Life Garden3 mg
- Women's MultiNaturesPlus AgeLoss30 mg
- Women's MultiGarden of Life MyKind Organics1.56 mg
- Women's MultiHabit0.6 mg
- Women's Multi & OmegasSmartyPants0.12 mg
- Women's Multi + Omega-3 Ultra SoftgelsOLLY1.2 mg
- Women's Multi 40+Garden of Life MyKind Organics2 mg
- Women's Multi 40+ Organic BerryGarden of Life MyKind Organics0.6 mg
- Women's Multi 45 PlusSeniorLife Health60 mg
- Women's Multi 50+Nature's Bounty1.1 mg
- Women's Multi 50+Thorne · off the market40 mg
- Women's Multi GoldNutriGold · off the market9 mg
- Women's Multi Gummies RaspberryVital Proteins0.1 mg
- Women's Multi Organic BerryGarden Of Life MyKind Organics0.6 mg
- Women's Multi PearlsFinest Nutrition1.5 mg
- Women's Multi PlusMDLogic1.7 mg
- Women's Multi TangerineMegaFood0.6 mg
- Women's Multi Vitamin & Mineral FormulaWindmill Rx Premium Vitamins5 mg
- Women's Multi Vitamins Natural FormulaBody Basix · off the market25 mg
- Women's Multi with IronAltrum25 mg
- Women's Multi-VitaminBIOVEA50 mg
- Women's Multi-VitaminTropical Oasis1.5 mg
- Women's Multi-VitaminUltamins · off the market2.4 mg
- Women's Multi-VitaminCalifornia Gold Nutrition Ultamins2.4 mg
- Women's MultipleRadiance Select80 mg
- Women's MultipleProgressive Professional from Progressive Laboratories25 mg
- Women's MultiStartNatural Factors30 mg
- Women's MultivitaminApex · off the market6 mg
- Women's MultivitaminSpring Valley80 mg
- Women's MultivitaminBodybuilding.com Foundation Series20 mg
- Women's MultivitaminLeader1.5 mg
- Women's MultivitaminGNC Earth Genius · off the market5 mg
- Women's MultivitaminNutraChamps · off the market25 mg
- Women's MultivitaminCodeage · off the market3 mg
- Women's MultivitaminBioSchwartz1.2 mg
- Women's MultivitaminRainbow Light · off the market25 mg
- Women's MultivitaminiPro Organic Supplements · off the market7 mg