Tryptophan

Does tryptophan work?

Tryptophan Claims

The supplement database currently has 4 claims for Tryptophan. The claims include: improve cognitive ability, improve running performance, decrease fatigue, improve cycling performance.

Overall Effectiveness Rating for Tryptophan

The overall effectiveness rating for tryptophan is 2.2 out of 3. This rating means there is some evidence that using tryptophan 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 Tryptophan

There are 5 studies in the database on tryptophan; the confidence rating is 25. 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 tryptophan as a whole. There are also individual ratings for the claims below.

Products Containing Tryptophan

There are 11 products in the database containing Tryptophan. Follow the link to see the full list.

Individual Claims

The overall ratings above do no necessarily reflect each claim about tryptophan. 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 tryptophan's ability to decrease fatigue is 2 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 tryptophan's ability to decrease fatigue.

Effectiveness Rating for this claim: 2 out of 3

Confidence Rating for this claim: 20

The effectiveness rating for tryptophan's ability to improve cognitive ability is 2 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 tryptophan's ability to improve cognitive ability.

Effectiveness Rating for this claim: 2 out of 3

Confidence Rating for this claim: 20

The effectiveness rating for tryptophan's ability to improve cycling performance is 3 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 tryptophan's ability to improve cycling performance.

Effectiveness Rating for this claim: 3 out of 3

Confidence Rating for this claim: 20

The effectiveness rating for tryptophan's ability to improve running performance is 2 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 tryptophan's ability to improve running performance.

Effectiveness Rating for this claim: 2 out of 3

Confidence Rating for this claim: 40