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 128 of 203), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- OmniaLifePharm1 mg
- OmnicholineCardiovascular Research0.1 mg
- OmniumSolgar30 mg
- Omnium Iron-FreeSolgar31 mg
- Once A Day Albumin ComplexCGM Labs4 mg
- Once Daily Adult 50+ MultivitaminSolaray5 mg
- Once Daily Bariatric MultiVitaminBariatric Choice20 mg
- Once Daily High Energy Iron Free MultivitaminSolaray · off the market5 mg
- Once Daily High Energy Multi-Vita-MinSolaray · off the market10 mg
- Once Daily High Energy Multi-Vita-Min Liquid Natural Orange FlavorSolaray10 mg
- Once Daily High Energy MultivitaminSolaray10 mg
- Once Daily High Energy Multivitamin Timed ReleaseSolaray10 mg
- Once Daily Men's MultiNobi Nutrition1.3 mg
- Once Daily Multi VitaminLuckyVitamin1.5 mg
- Once Daily Multi-VitaminVitacost Synergy10 mg
- Once Daily Multiple Vitamins, Minerals & HerbsSaveWorldHealth.com · off the market25 mg
- Once Daily MultivitaminNatrol25 mg
- Once Daily Prenatal MultiMeijer1.7 mg
- Once Daily Raspberry Splash FlavorEye Candy0.6 mg
- Once Daily Woman MultivitaminSolaray5 mg
- Onco-XBioGenesis Nutraceuticals · off the market2 mg
- OncoviteMission Pharmacal0.34 mg
- One 'N' OnlyPure Essence Labs · off the market10.2 mg
- One 'n' OnlyPure Essence22.5 mg
- One 'n' Only MenPure Essence23.25 mg
- One 'N' Only Men's FormulaPure Essence Labs22.5 mg
- One 'n' Only PrenatalPure Essence10.5 mg
- One 'n' Only WomenPure Essence Labs · off the market23.25 mg
- One 'n' Only WomenPure Essence23.25 mg
- One All-In-One Nutritional ChocolateVega · off the market0.75 mg
- One All-In-One Nutritional Shake BerryVega0.75 mg
- One All-In-One Nutritional Shake ChocolateVega0.75 mg
- One All-In-One Nutritional Shake French VanillaVega0.75 mg
- One All-In-One Nutritional Shake NaturalVega0.75 mg
- One All-In-One Nutritional Shake Vanilla ChaiVega0.75 mg
- One DailyPuritan's Pride · off the market1.35 mg
- One DailyGNC Women's Ultra Mega1.65 mg
- One DailyGNC Mega Men · off the market1.65 mg
- One DailyCHK Nutrition1.5 mg
- One DailyMegaFood5 mg
- One DailyInnate Response Formulas5 mg
- One DailyNature's Truth1.5 mg
- One Daily 50 PlusEqualine4.5 mg
- One Daily A to Zinc With LycopeneNature's Gifts · off the market1.5 mg
- One Daily Active21st Century4.5 mg
- One Daily Adults 50+21st Century4.5 mg
- One Daily CapInnate Response Formulas6 mg
- One Daily Cholesterol Health With Policosanol21st Century1.5 mg
- One Daily EnergyRite Aid Pharmacy3 mg
- One Daily EnergyRexall Sundown Naturalist1.9 mg