L-Phenylalanine, an essential amino acid, it occurs naturally in protein rich foods such as milk, poultry, beef, soy, eggs, and pork which are converted by the body into another amino acid L-tyrosine. Phenylalanine shortage might also produce feelings of confusion, decreased energy, decreased alertness, and decreased memory. It is an essential, nine-carbon amino acid and is a precursor to the amino acid tyrosine. It supports mental clarity and alertness. It may also promote positive mood and physical well-being....<Read more> |