Does leucine work?

Overall Effectiveness Rating for Leucine

The overall effectiveness rating for leucine is 1.6 out of 3. This rating means there is some evidence that using leucine may lead to positive results. This rating also means that some evidence does not back up all claims. Below you can find individual ratings for specific claims.

Overall Confidence Rating for Leucine

There are 11 studies in the database on leucine; the confidence rating is 51. A score above 80 means the effectiveness rating for this supplement is reliable. A score under 80 means there is insufficient evidence to ensure a reliable effectiveness rating. Note, this rating is for leucine as a whole. There are also individual ratings for the claims below.

Products Containing Leucine

There are 35 products in the database containing Leucine. Follow the link to see the full list.

Individual Claims

The overall ratings above do no necessarily reflect each claim about leucine. Individual claims can have higher or lower ratings. For example, some supplements may have a lot of backing for one claim, but be completely useless for another. Click on claims below for more information.

Body Composition (weight, muscle, body fat) Claims Effectiveness Rating Confidence Rating
increase muscle mass

Protein Synthesis Claims Effectiveness Rating Confidence Rating
decrease protein breakdown
increase protein synthesis

Performance Claims Effectiveness Rating Confidence Rating
increase strength

Recovery Claims Effectiveness Rating Confidence Rating
improve recovery
reduce muscle damage
reduce muscle soreness