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.
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.)
Written by/reviewed by: Kristi Monson, PharmD;Arthur Schoenstadt, MD
Last reviewed by: KristiMonson, PharmD;
List of references (click here):
Jellin JM, editor. Pharmacist's Letter/Prescriber's Letter Natural Medicines Comprehensive Database Web site. Available at: http://naturaldatabase.com/. Accessed March 6, 2008.
Food and Nutrition Board, Institute of Medicine. Dietary Reference Intakes for Energy, Carbohydrates, Fiber, Fat, Fatty Acids, Cholesterol, Protein, and Amino Acids (Macronutrients). Washington, DC: National Academy Press, 2005. Available at: http://books.nap.edu/openbook.php?record_id=10490&page=R1. Accessed March 6, 2008.
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