L-tyrosine is the catalytic substrate for the monophenolic function of tyrosinase and the main raw material for the final formation of eumelanin and pheomelanin. In the research and development of whitening cosmetics, the synthesis of tyrosinase structural analogues that compete with tyrosine can also effectively inhibit the production of melanin.
Patients with vitiligo eating foods containing L-tyrosine can promote the formation of melanin and reduce the symptoms of vitiligo.
L-tyrosine is the raw material for amino acid infusion and amino acid compound preparations, and is used as a nutritional supplement. Treatment of polio, nuclear encephalitis, and hyperthyroidism. It is also used as a raw material for the manufacture of diiodotyrosine, dibromotyrosine and L-dopa.
A typical dose of L-tyrosine is about 1 to 2 grams per day. As an antidepressant, take 500 to 1,000 mg two to three times a day.
Because L-tyrosine has a stimulating and anti-depressant effect, 1000 to 1500 mg tryptophan (tryptophan calms people) taken in the morning and before lunch will have a good therapeutic effect on reducing depression at night . Researchers have found that for some people, tryptophan and tyrosine used together, than tyrosine or tryptophan alone, are more effective in reducing depression.
