L-dopa vs dopa

L-dopa and dopa both are nouns.

Word	Noun	Adjective	Verb	Adverb
L-dopa	Yes	No	No	No
dopa	Yes	No	No	No

As nouns, dopa is a hypernym of L-dopa; that is, dopa is a word with a broader meaning than L-dopa:

L-dopa: the levorotatory form of dopa (trade names Bendopa and Brocadopa and Larodopa); as a drug it is used to treat Parkinson's disease
dopa: amino acid that is formed in the liver and converted into dopamine in the brain

Other hypernyms of L-dopa include dihydroxyphenylalanine.

L-dopa (noun)	dopa (noun)
the levorotatory form of dopa (trade names Bendopa and Brocadopa and Larodopa); as a drug it is used to treat Parkinson's disease	amino acid that is formed in the liver and converted into dopamine in the brain