Biotin: what it does, by goal, and the dose that worked
What the 41 human studies of biotin 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 11 goals
1 of these 41 human studies gave biotin by injection, not by mouth.
| Goal | What the studies show | Studies | Dose that worked |
|---|---|---|---|
| Improved in studies 10 studies, 5 showed an improvement, 2 found none, 1 pooled analysis | 10 | 2 mg | |
| Improved in studies 8 studies, 3 showed an improvement, 1 found none, 2 pooled analyses | 8 | – | |
| Improved in studies 13 studies, 2 showed an improvement, 1 found none, 1 by drip, injection or inhaler | 13 | 1.3 mg | |
| Improved in studies 2 studies, 1 showed an improvement | 2 | 150 mcg | |
| Too few studies 1 study, no clear result | 1 | – | |
| Too few studies 1 study, no clear result | 1 | – | |
| Too few studies 1 study, no clear result | 1 | – | |
| Too few studies 1 study, it found no effect | 1 | – | |
| No effect in studies 3 studies, 1 showed an improvement, 2 found none | 3 | – | |
| No effect in studies 3 studies, 2 found none, 1 pooled analysis | 3 | – | |
| No effect in studies 3 studies, 2 found none | 3 | – |
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 24
Dose and safetyThe dose that worked and the upper limit
The studies taken by mouth that showed an improvement gave 150 mcg to 2 mg a day.
Biohacker panelMembersWhat our 10 biohackers say about biotin
Members see what each biohacker said. Start My 7-Day Free Trial →
Questions people askMembersAnswered from the figures on this page
What is biotin good for?
Answer for members.
How much biotin a day?
Answer for members.
Can I take biotin 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 →