<unk> , also known as L-threo-dihydroxyphenylserine (L-DOPS), is chemically analogous to levodopa (L-3,4-dihydroxyphenylalanine; L-DOPA). Whereas levodopa functions as a precursor and prodrug to dopamine,<unk>  is a precursor and prodrug of norepinephrine.
Droxidopa
Ciladopa
Carbidopa
Carbidopa/levodopa
Selegiline
Belinostat
Droperidol
Pramipexole