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tyrosine
L-dopa
dopamine
carbidopa
bromocriptine (parlodel)
pergolide (premax)
ropinirole (requip/neupro)
pramipexole (mirapex)
rotigotine
selegiline (eldepryl/ EMSAM)
pargyline
tolcapone (tasmar)
entacapone (Comtan)
benztropine (cogentin)
atropine