what does tyrosine do
TYROSINE Overview Information. Tyrosine is one of the amino acids, which are the building blocks of protein. The body makes tyrosine from another amino acid called phenylalanine. Tyrosine can also be found in dairy products, meats, fish, eggs, nuts, beans, oats, and wheat.Tyrosine is used in protein supplements to treat an inherited disorder called phenylketonuria (PKU). Weight loss. 2  Taking a combination of tyrosine, cayenne, green tea, caffeine, and calcium for 8 weeks seems to slightly reduce body fat mass by 0.9 kg in overweight people. 3  However, the combination supplement does not seem to improve blood pressure, heart rate, or the excretion of fat in the feces. 4  Wrinkled skin.