Phenylalanin

 

Phenylalanine is an essential amino acid found in many foods and also available as a dietary supplement. These supplements are often claimed to be beneficial for treating rheumatoid arthritis, attention deficit hyperactivity disorder (ADHD), and depression. However, more research is needed to support these claims. Since some people may be more likely to experience problems with phenylalanine than others, you should talk with your healthcare provider before taking it if you are pregnant, have phenylketonuria, or have any allergies.