<unk>  is a Catechol-O-Methyltransferase Inhibitor that is FDA approved for the treatment of Parkinson’s Disease as an adjunct to levodopa and carbidopa therapy.   Common adverse reactions include Dyskinesia, Urine Discoloration, Nausea, Diarrhea, abdominal pain.
Entacapone
Diphenidol
Melevodopa
Aglepristone
Rivastigmine 
Rivastigmine
Nabilone
Tasimelteon