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 19 of 203), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- B Complex 50 mg CapsuleVitalBulk · off the market50 mg
- B Complex CWSPharmax2 mg
- B Complex Full-SpectrumSuper Nutrition1.5 mg
- B Complex High PotencyBuried Treasure Liquid Nutrients · off the market50 mg
- B Complex Liquid Sublingual RaspberryVillage Vitality1.5 mg
- B Complex MFSeeking Health25 mg
- B Complex Neuro FactorsProtocol For Life Balance50 mg
- B Complex PlusKlaire Labs · off the market15 mg
- B Complex PlusSeeking Health25 mg
- B Complex Plus C & ENature's Gifts · off the market11 mg
- B Complex RaspberryThymely Solutions · off the market1.5 mg
- B Complex SprayBiotech Nutritions1.5 mg
- B Complex With CThompson10 mg
- B Complex with C21st Century · off the market15 mg
- B Complex with Choline & InositolWindmill Natural Vitamins · off the market5 mg
- B Complex with Choline & InositolWindmill5 mg
- B Complex with Folic, B-6 & B-12Healthy Sense · off the market1.5 mg
- B Complex with Folic, B-6 & B-12Essential Being1.5 mg
- B Complex With Vitamin CCVS Pharmacy15 mg
- B Complex with Vitamin CMason Natural15 mg
- B Complex With Vitamin CCVS Health15 mg
- B Complex with Vitamin C & IronWindmill Natural Vitamins · off the market5 mg
- B Complex with Vitamin C & IronWindmill5 mg
- B Complex-75DaVinci Laboratories of Vermont · off the market75 mg
- B Complex-75DaVinci Laboratories75 mg
- B Daily EssentialsWhole Foods50 mg
- B MinusSeeking Health25 mg
- B Super ComplexNature's Measure1.5 mg
- B Vitamin & Ginseng ComplexHigher Nature25 mg
- B Vitamin ComplexSuperiorLabs50 mg
- B Vitamins & ReloraEXOS Performance Nutrition · off the market10 mg
- B+cCarlson10 mg
- B-1 (Thiamin Hydrochloride) 100 mgWindmill Natural Vitamins · off the market100 mg
- B-1 (Thiamine Hydrochloride) 100 mgWindmill Natural Vitamins · off the market100 mg
- B-1 100 mgVitamin World100 mg
- B-1 100 mgDouglas Laboratories · off the market100 mg
- B-1 100 mgSuperior Source100 mg
- B-1 100 mg21st Century100 mg
- B-1 100 mgCarlson100 mg
- B-1 100 mgSource Naturals100 mg
- B-1 100 mgBasic Vitamins100 mg
- B-1 100 mgNature's Truth · off the market100 mg
- B-1 100 mgNOW100 mg
- B-1 100 mgWonder Laboratories100 mg
- B-1 100 mg (Thiamin Hydrochloride)Windmill Natural Vitamins · off the market100 mg
- B-1 100 mg ThiaminCarlson100 mg
- B-1 250 mgVitamin World250 mg
- B-1 250 mgMason Natural250 mg
- B-1 250 mg Thiamin HClPhysioLogics · off the market250 mg
- B-1 Brewer's Yeast 1000 mgRemedys Nutrition100 mg