Essential Amino Acid**
DL-Phenylalanine plays a key role in the biosynthesis of tyrosine and helps form some of the neurotransmitters that work in the brain.** DL-Phenylalanine is an essential amino acid that cannot be made by the body and must be obtained from food.** Amino acids are considered the building blocks of protein and are necessary for life.**No Artificial Color, Flavor or Sweetener, No Preservatives, No Sugar, No Starch, No Milk, No Lactose, No Soy, No Gluten, No Wheat, No Yeast, No Fish, Sodium Free.