L-DOPA - Wikipedia l-DOPA, also known as l-3,4-dihydroxyphenylalanine and used medically as levodopa, is made and used as part of the normal biology of some plants [2] and animals, including humans
DOPA - an overview | ScienceDirect Topics DOPA is the immediate product of the rate-limiting enzyme in catecholamine biosynthesis and can be found in substantial levels in the plasma It is partly produced through the hydroxylation of tyrosine in sympathetic noradrenergic nerves and can also be obtained from dietary sources