L-Tyrosine is a precursor of dopamine and dopa (improving the memory and well-being).

L-Tyrosine is also a precursor of catecholamine (noradreline and adrenaline), satiogenes (sensation of not being hungry), and thyroid hormones (thyronine and thyroxine).

N-Acetyl–L-Tyrosine can be used to treat catecholamine retardation, which is a type of depression (weakness in catecholamine) whose symptoms are related to psychomotor retardation, hypersomnia, mental asthenia (a decline in creativity, ideation, speed, decision- making), decreased memory (lower evocation capacity), decreased impulsive intensity (a decline in libido, appetite, motivation, pleasure anticipation, anhedonie, non appreciation of rewards), decreased concentration and visual contrasts.

A supplementary intake of L-Tyrosine reduces stress, plays a role in narcolepsy, and chronic fatigue. It is also used to fight against neuralgia, allergies, premenstrual syndrome, depression and psychological anxiety.

The absorption of L-Tyrosine treats mouth and gums infections, helps cell tissues development and metabolism of fats.

L-Tyrosine reinforces circulation at the scalp level and has positive effects on skin and hair pigmentation.

L-Tyrosine activates the suprarenal glands and increases energy in stressed out people. It protects against mental depression, improves the vivacity and sensation of the well-being.

L-Tyrosine helps detoxication of cocaine addicts. It increases the basal metabolism, therefore, leading to a more rapid weight loss. It stabilizes stress levels and depression (hyperinsulinism). It has positive effects on chronic fatigue syndrome (CFS).