<unk>  is a piperidine anticholinergic. It is a muscarinic antagonist that has been used to treat neuroleptic-induced Parkinsonism.<unk>  was discovered at Janssen Pharmaceutica in 1968.
Dexetimide
Sermorelin
Deslorelin
Proligeston
Estropipate 
Methysergide
Dolasetron 
Progabide