Table of Contents

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

Phenylalanine Simple Report

  • Supplement: Phenylalanine
  • Supplement Category: essential amino acids
  • Number of Products Containing Phenylalanine: 80
  • Effectiveness Rating: 1.7 out of 3
  • Research Rating: 20 (above 80 indicates sufficient research)
  • Number of Studies: 2
  • Number of Claims: 3
  • Effective Dosage Range: 3 grams per day

Phenylalanine Detailed Report

Overall Effectiveness Rating

The overall effectiveness rating for phenylalanine is 1.7 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 phenylalanine as a whole; there are also individual ratings for the claims below.

Read more: What is the effectiveness rating?

Research Rating for Phenylalanine

There are 2 studies in the database on phenylalanine; the research rating is 20. 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 phenylalanine as a whole; there are also individual ratings for the claims below.

Read more: What is the research rating?

Products Containing Phenylalanine

Products Names Amount of Phenylalanine
After Action Recovery 500mg
Endure 250mg
Amino Lean Amount not listed.
EAA Strong Amount not listed.
Amino Flood EAAs 300mg
Full list of all 80 products containing Phenylalanine.

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.

Body Composition (weight, muscle, body fat) Claims Effectiveness Rating Research Rating
increase fat burning

Energy Balance (calories in & calories out) Claims Effectiveness Rating Research Rating
decrease calorie intake

Mental Health Claims Effectiveness Rating Research Rating
improve mood


The Supplement Database includes 2 studies on phenylalanine dosing. These studies indicate an effective dose is 3 grams per day. For a more detailed dosing analysis visit: Supplement Dosing for Phenylalanine.


Title of Study
Phenylalanine and aspartame fail to alter feeding behavior, mood and arousal in men
The effects of phenylalanine on exercise-induced fat oxidation: a preliminary, double-blind, placebo-controlled, crossover trial