L-Tyrosine is a non-essential organic amino acid that is a building block of protein. It is an organic amino acid due to the presence of a carbon atom in its makeup. It is a precursor of the neurotransmitter dopamine, as well as a precursor to the adrenal hormones norepinephrine and epinephrine. The body can make L-tyrosine from the amino acid phenylalanine. L-tyrosine rich foods include animal meat, wheat products, oatmeal and seafood.
L-tyrosine may help athletes avoid overtraining, due to its ability to offset fatigue.* Because L-tyrosine is a precursor of Dopamine, supplementing with L-tyrosine may heighten mental alertness, increase feelings of well being, and offset physical and mental fatigue. Hard training athletes may benefit from supplementing with L-tyrosine as it helps to offset fatigue and stress associated with intense training.*