Wiktionary
budipine
n. An antiparkinson drug.
Wikipedia
Budipine
Budipine (brand name Parkinsan) is an antiparkinson agent marketed for the treatment of Parkinson's disease.1
While its exact mechanism of action is not well characterized, it is believed to be an NMDA receptor antagonist, but also promoting the synthesis of dopamine.
Because it provides additional benefits relative to existing treatments, it probably does not precisely mimic the mechanism of an existing known treatment.