Amino Acids - Phenylalanine - Source

Almonds are high in phenylalanine, at 61 mg per gram of protein. Oatmeal runs a close second, at 58.5 mg/g with soy beans in third at 54 mg/g.

Phenylalanine can also be found in cottage cheese, lima beans, peanuts (not a recommended source), pumpkin seeds, sesame seeds, skim milk, other soy products, and other protein-rich foods.

Phenylalanine is also found as part of a multi-amino acid complex and protein powder supplements. Depending on the country in which you live, phenylalanine may also be available as an isolated supplement in capsule or tablet form. You may require a prescription.