A substance used as a therapy for
Parkinson's Disease; the L form of Dopa; L-dihydroxyphenylalanine; L-hydroxytyrosine (
C9H11NO4); also called
L-dopa. In the body it is converted by the enzyme dopa-decarboxylase into
dopamine, the form in which it is active in the brain, affecting neural impulse transmission. [
PJC]