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 24 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 with Rice BranNaturesPlus Source of Life Garden10 mg
- B-Complex with Vitamin CFinest15 mg
- B-Complex With Vitamin CVitaCeutical Labs50 mg
- B-Complex With Vitamin CFinest Nutrition10 mg
- B-Complex with Vitamin CNature Made · off the market15 mg
- B-Complex with Vitamin CWonder Laboratories25 mg
- B-Complex with Vitamin CFinest Nutrition Free & Pure10 mg
- B-Complex with Vitamin CRite Aid15 mg
- B-Complex with Vitamin C Stress FormulaSolgar10 mg
- B-Complex with Vitamin C Timed ReleasePuritan's Pride5 mg
- B-Complex With Vitamins C & EBronson Laboratories · off the market15 mg
- B-Complex-50Village Green Pathway50 mg
- B-EnergyShot-B · off the market1.5 mg
- B-KalmPlexusInterPlexus · off the market6.2 mg
- B-KalmPlexusInterPlexus Whole Body Health6.2 mg
- B-LongMontiff20 mg
- B-Natural Hair VitaminsBarry Fletcher6 mg
- B-PlexKaruna100 mg
- B-RenewPureFormulas100 mg
- B-RepleteNuMedica20 mg
- B-RightJarrow Formulas25 mg
- B-Right Low Odor B-ComplexJarrow Formulas · off the market25 mg
- B-StressBio-Tech Pharmacal50 mg
- B-Stress FormulaNature's Way25 mg
- B-Stress Formula with EleutheroNature's Way25 mg
- B-Stress Formula with Siberian EleutheroNature's Way · off the market50 mg
- B-Stress Plus Iron and ZincSolaray50 mg
- B-Stress Yellow TabletLife-Line · off the market15 mg
- B-SupremeDesigns for Health100 mg
- B-UnStressedMegaFood20 mg
- B-VitalHigher Nature25 mg
- B1 100 mgThompson100 mg
- B1 100 mgCVS Health100 mg
- B1 100 mgNatural Grocers by Vitamin Cottage100 mg
- B1 100 mgNature Made100 mg
- B1 25 mg Cherry BurstEZ Melts25 mg
- B1 Natural Berry FlavorBariMelts12.5 mg
- B1 Thiamine Hydrochloride 100 mgWindmill Natural Vitamins100 mg
- B100 ComplexSundown Naturals100 mg
- B100 ComplexWebber Naturals · off the market100 mg
- B100 Complex With Folic AcidSundown Naturals · off the market100 mg
- B12 BoosterMBi Nutraceuticals12.5 mg
- B5 SapNFH100 mg
- B50 CapsulesWonder Laboratories50 mg
- B50 ComplexWebber Naturals · off the market50 mg
- B50-KapsDC50 mg
- B6 + B ComplexVital Nutrients50 mg
- B6 ComplexPure Encapsulations100 mg
- B6 SapNFH50 mg
- B6-PlusAnabolic Laboratories · off the market10 mg