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 65 of 203), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Food Multi II Without Copper, Iodine, Iron & KInnate Response Formulas5 mg
- Food Multi III BioMaxInnate Response Formulas5 mg
- Food Multi IVInnate Response Formulas22 mg
- Food-Based B-CompleteRainbow Light · off the market50 mg
- Food-Based Prenatal CompleteVitaCeutical Labs30 mg
- For A Night OutSense24 mg
- For Hair OnlyOnly Natural · off the market10 mg
- For Her Fertility SupportBluebonnet Intimate Essentials1.4 mg
- For Him Fertility SupportBluebonnet Intimate Essentials1.8 mg
- For Mature Men 50+ His Daily OneQuest · off the market7.5 mg
- For Mature Women 50+ Her Daily OneQuest · off the market5 mg
- For MenCountry Life Realfood Organics1.2 mg
- For Men CapsMNP Michael's Naturopathic Programs · off the market56 mg
- For Men Daily Multi VitaminMichael's Naturopathic Programs75 mg
- For Men Daily Multi VitaminMNP Michael's Naturopathic Programs75 mg
- For Men Her Daily OneQuest · off the market5 mg
- For Men Multivitamin CapsulesMH Michael's Health Naturopathic Programs56 mg
- For Men Under 50 Multivitamin Multimineralup&up1.2 mg
- For Teen Boys His Daily OneQuest · off the market10 mg
- For Teen Girls Her Daily OneQuest · off the market10 mg
- For WomenCountry Life Realfood Organics1.2 mg
- For Women CapsMNP Michael's Naturopathic Programs · off the market30 mg
- For Women Caps Daily Multi VitaminMNP Michael's Naturopathic Programs · off the market30 mg
- For Women Daily Multi VitaminMichael's Naturopathic Programs60 mg
- For Women Daily Multi VitaminMNP Michael's Naturopathic Programs60 mg
- For Women Her Daily OneQuest · off the market5 mg
- For Women Her Daily One ChewableQuest · off the market10 mg
- For Women Multivitamin CapsulesMH Michael's Health Naturopathic Programs30 mg
- For Women OnlyOnly Natural · off the market5 mg
- For Your Eyes LuteinANTIAGING Institute of California8 mg
- Forever DailyForever2.5 mg
- ForgivenF Forgiven · off the market150 mg
- Formula 100Puritan's Pride100 mg
- Formula 19DC0.5 mg
- Formula 2 Multivitamin ComplexHerbalife · off the market6.7 mg
- Formula 2 Multivitamin ComplexHerbalife Nutrition · off the market6.7 mg
- Formula 23Wonder Laboratories10 mg
- Formula 249 Iron FreeDC10 mg
- Formula 30DC0.5 mg
- Formula 32DC50 mg
- Formula 34DC100 mg
- Formula 34 B-ComplexDC100 mg
- Formula 35DC5 mg
- Formula 360DC2.31 mg
- Formula 390 B-ComplexDC25 mg
- Formula 40DC100 mg
- Formula 430 Vitamin B-6 Magnesium PotassiumWonder Laboratories10 mg
- Formula 430 Vitamin B-6 Magnesium PotassiumWonder Labs10 mg
- Formula 75DC75 mg
- Formula 75 High Potency Vitamin MineralDC75 mg