Phenylalanine Amino Acid
Phenylalanine is an essential amino acid that must be ingested through food or dietary supplemental intake.
Phenylalanine is found in foods that contain protein such as beef, poultry, pork, fish, milk, yogurt, eggs, cheese, soy products, nuts and seeds. The artificial sweetener aspartame is also high in phenylalanine. There are three different forms of phenylalanine, only 1-phenylalanine is found in food.