Leucine

Does leucine work?

Leucine Claims

The supplement database currently has 6 claims for Leucine. The claims include: increase protein synthesis, decrease protein breakdown, reduce muscle soreness, improve recovery, increase muscle mass, increase strength.

Overall Effectiveness Rating for Leucine

The overall effectiveness rating for leucine is 1.7 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 15 studies in the database on leucine; the confidence rating is 50. 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.

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.

The effectiveness rating for leucine's ability to decrease protein breakdown is 2.3 out of 3. The confidence rating for this claim is 60. This means there is not enough evidence in the database on this claim and the effectiveness rating above is not valid. Read more about leucine's ability to decrease protein breakdown.

Effectiveness Rating for this claim: 2.3 out of 3

Confidence Rating for this claim: 60

The effectiveness rating for leucine's ability to improve recovery is 1 out of 3. The confidence rating for this claim is 20. This means there is not enough evidence in the database on this claim and the effectiveness rating above is not valid. Read more about leucine's ability to improve recovery.

Effectiveness Rating for this claim: 1 out of 3

Confidence Rating for this claim: 20

The effectiveness rating for leucine's ability to increase muscle mass is 1 out of 3. The confidence rating for this claim is 40. This means there is not enough evidence in the database on this claim and the effectiveness rating above is not valid. Read more about leucine's ability to increase muscle mass.

Effectiveness Rating for this claim: 1 out of 3

Confidence Rating for this claim: 40

The effectiveness rating for leucine's ability to increase protein synthesis is 2 out of 3. The confidence rating for this claim is 120. This means there is not enough evidence in the database on this claim and the effectiveness rating above is not valid. Read more about leucine's ability to increase protein synthesis.

Effectiveness Rating for this claim: 2 out of 3

Confidence Rating for this claim: 120

The effectiveness rating for leucine's ability to increase strength is 1 out of 3. The confidence rating for this claim is 40. This means there is not enough evidence in the database on this claim and the effectiveness rating above is not valid. Read more about leucine's ability to increase strength.

Effectiveness Rating for this claim: 1 out of 3

Confidence Rating for this claim: 40

The effectiveness rating for leucine's ability to reduce muscle soreness is 1 out of 3. The confidence rating for this claim is 20. This means there is not enough evidence in the database on this claim and the effectiveness rating above is not valid. Read more about leucine's ability to reduce muscle soreness.

Effectiveness Rating for this claim: 1 out of 3

Confidence Rating for this claim: 20