Phenylalanine is one of the nine essential amino acids that cannot be synthesised by the human body and can only be obtained through your diet.
Phenylalanine plays an integral role in the structure and function of proteins and enzymes and the production of other amino acids. Is a precursor for the neurotransmitters tyrosine, dopamine, epinephrine and norepinephrine. It also stimulates the release of adrenaline and noradrenaline, neurotransmitters essential for optimal activity of your brain and peripheral nervous system.