L-tyrosine

Tyrosine is a phenolic amino acid that plays a crucial role in the body as a precursor to several important substances. It is one of the amino acids found in most proteins.12

Tyrosine is essential for the synthesis of catecholamines, which include neurotransmitters and hormones like dopamine, epinephrine (adrenaline), and norepinephrine (noradrenaline). The body converts tyrosine into these vital compounds through a specific sequence of biochemical reactions. This process occurs in areas such as the brain and the adrenal medulla.3

While some animals require dietary sources of tyrosine, others can synthesize it from phenylalanine. Tyrosine's role extends to the treatment of conditions like parkinsonism, where its derivative, L-dopa, is used to alleviate dopamine deficiency in the brain.23