Thiamin: what it does, by goal, and the dose that worked
What the 198 human studies of thiamin we graded show for each goal, the dose that worked, and the products that hold it. This page is educational, not medical advice.
What it does, by goalMembersThe top 5 of 18 goals
17 of these 198 human studies gave thiamin by drip or injection, not by mouth.
| Goal | What the studies show | Studies | Dose that worked |
|---|---|---|---|
| Improved in studies 27 studies, 9 showed an improvement, 3 found none, 3 pooled analyses, 1 by drip, injection or inhaler | 27 | 10 mg | |
| Improved in studies 29 studies, 5 showed an improvement, 6 found none, 2 pooled analyses, 6 by drip, injection or inhaler | 29 | 960 mcg | |
| Improved in studies 10 studies, 5 showed an improvement, 1 pooled analysis | 10 | – | |
| Improved in studies 14 studies, 3 showed an improvement, 5 found none, 1 pooled analysis, 2 by drip, injection or inhaler | 14 | 20 mg | |
| Improved in studies 15 studies, 2 showed an improvement, 3 found none, 2 pooled analyses | 15 | – | |
| Improved in studies 12 studies, 2 showed an improvement, 1 pooled analysis, 1 by drip, injection or inhaler | 12 | – | |
| Improved in studies 9 studies, 2 showed an improvement, 1 found none, 1 pooled analysis, 1 by drip, injection or inhaler | 9 | 100 mg | |
| Improved in studies 7 studies, 2 showed an improvement, 1 found none, 1 by drip, injection or inhaler | 7 | 800 mcg | |
| Improved in studies 6 studies, 2 showed an improvement, 1 found none, 1 pooled analysis | 6 | – | |
| Improved in studies 10 studies, 1 showed an improvement, 2 found none, 2 pooled analyses, 1 by drip, injection or inhaler | 10 | – | |
| Improved in studies 4 studies, 1 showed an improvement, 1 pooled analysis, 1 by drip, injection or inhaler | 4 | – | |
| Too few studies 2 studies, 1 showed an improvement, 1 found none, 1 by drip, injection or inhaler | 2 | – | |
| Too few studies 8 studies, 1 found none, 1 pooled analysis | 8 | – | |
| Too few studies 6 studies, 1 found none | 6 | – | |
| Too few studies 3 studies, no clear result yet | 3 | – | |
| No effect in studies 31 studies, 5 showed an improvement, 9 found none, 5 pooled analyses, 2 by drip, injection or inhaler | 31 | 1 mg | |
| No effect in studies 19 studies, 2 showed an improvement, 8 found none, 2 by drip, injection or inhaler | 19 | – | |
| No effect in studies 6 studies, 3 found none | 6 | – |
Members see which goal each result is for, and the products for it. Start My 7-Day Free Trial →
Products – highest ranked firstMembersThe top 3 of 15
Dose and safetyThe dose that worked and the upper limit
The studies taken by mouth that showed an improvement gave 800 mcg to 300 mg a day.
Biohacker panelMembersWhat our 10 biohackers say about thiamin
Members see what each biohacker said. Start My 7-Day Free Trial →
Questions people askMembersAnswered from the figures on this page
What is thiamin good for?
Answer for members.
How much thiamin a day?
Answer for members.
Can I take thiamin with my meds?
Answer for members.
Members see the answers, checked against their own meds and goals. Start My 7-Day Free Trial →
Educational, not medical advice. Figures come from the human studies on PubMed we have graded; a study counts for a form when it names the form it used. Updated as new studies arrive. How we grade →