The overall rating for tryptophan is 2.2 out of 3 meaning there is some evidence that this supplement does some (not all) of what it claims. Using this supplement may lead to some improvements.

Table of Contents

  1. Simple Report
  2. Detailed Report
  3. Overall Effectiveness Rating
  4. Research Rating
  5. Products Containing Tryptophan
  6. Claim Ratings
  7. References

Tryptophan Simple Report

  • Supplement: Tryptophan
  • Supplement Category: essential amino acids
  • Number of Products Containing Tryptophan: 78
  • Effectiveness Rating: 2.2 out of 3
  • Research Rating: 25 (above 80 indicates sufficient research)
  • Number of Studies: 4
  • Number of Claims: 4

Tryptophan Detailed Report

Overall Effectiveness Rating

The overall effectiveness rating for tryptophan is 2.2 out of 3. This rating means the evidence is mixed on the supplement's ability to deliver positive results. While some of the research supports its use, other evidence does not. Using this supplement may lead to positive results. Note, this effectiveness rating is for tryptophan as a whole; there are also individual ratings for the claims below.

Read more: What is the effectiveness rating?

Research Rating for Tryptophan

There are 4 studies in the database on tryptophan; the research 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 research rating is for tryptophan as a whole; there are also individual ratings for the claims below.

Read more: What is the research rating?

Products Containing Tryptophan

Products Names Amount of Tryptophan
Vintage Bliss 250mg
Iron Fit BCAA/EAA 300mg
Confined 100mg
Endure 50mg
BCAA Plus 350mg
Full list of all 78 products containing Tryptophan.

Claim Ratings

The overall ratings above are an average of the individual claim ratings below. Individual claims may have higher or lower ratings compared to the supplement's overall rating. For example, some supplements may have excellent backing for one claim, but be completely useless for another. Click on a claim below for more information.

Performance Claims Effectiveness Rating Research Rating
improve cycling performance
improve running performance
decrease fatigue

Mental Health Claims Effectiveness Rating Research Rating
improve cognitive ability

References

Title of Study
Effect of L-tryptophan supplementation on exercise performance
Effects of a diet integration with an oily emulsion of DHA-phospholipids containing melatonin and tryptophan in elderly patients suffering from mild cognitive impairment
L-tryptophan supplementation can decrease fatigue perception during an aerobic exercise with supramaximal intercalated anaerobic bouts in young healthy men
L-tryptophan supplementation does not improve running performance