Leucine: what it does, by goal, and the dose that worked
What the 47 human studies of leucine 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 3 of 3 goals
1 of these 47 human studies gave leucine by drip, not by mouth.
| Goal | What the studies show | Studies | Dose that worked |
|---|---|---|---|
| Improved in studies 24 studies, 7 showed an improvement, 5 found none, 9 pooled analyses | 24 | 2 g | |
| Improved in studies 8 studies, 2 showed an improvement, 6 pooled analyses, 1 by drip, injection or inhaler | 8 | – | |
| No effect in studies 19 studies, 4 showed an improvement, 4 found none, 4 pooled analyses | 19 | 2.2 g |
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Products – highest ranked firstMembersThe top 3 of 5
Dose and safetyThe dose that worked and the upper limit
The studies taken by mouth that showed an improvement gave 2 to 60 g a day.
Biohacker panelMembersWhat our 10 biohackers say about leucine
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Questions people askMembersAnswered from the figures on this page
What is leucine good for?
Answer for members.
How much leucine a day?
Answer for members.
Can I take leucine 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 →