Mental Health Home > Phenylalanine

Is It Effective?

The supplement may be effective for treating vitiligo (a skin condition). It is not known if it is effective for other uses.
(Click Does Phenylalanine Work? for more information.)

Dosing Information

Although recommendations are available for an adequate dietary intake of phenylalanine, as well as all other essential amino acids, less information is available about a safe and effective dose of the supplements for medicinal purposes. Be sure to follow the specific instructions on the label of your particular product.
(Click Phenylalanine Dosage for more information.)

Side Effects

Although it is a "natural" product, it can still cause side effects, especially in people with certain medical conditions. In particular, it may cause certain side effects in people with schizophrenia or Parkinson's disease.
(Click Phenylalanine Side Effects to learn more, including potentially serious side effects that you should report immediately to your healthcare provider.)

Drug Interactions With Phenylalanine

Phenylalanine can interact with a few medications (see Phenylalanine Drug Interactions).
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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