<prompt> Selegiline isDopa decarboxylase inhibitorMAO-B inhibitorCOMT inhibitorMAO-A inhibitor  <response>: B MAO-B inhibitor Selegiline is a MAO-B inhibitor. MAO exist in forms MAO-A MAO-B. MAO-A predominates in peripheral adrenergic structures intestinal mucosa. MAO-B predominates in brain Blood platelets. Selegline, along c- levodopa, prolongs its action, wearing-off effect. Based on the theory that oxidation of DA or toxin MPTP in the striatum by MAO to free radicals is cause for parkinsonism early therapy c- selegiline night delay progression of disorders. Non selective MAO inhibitors include: PhenelzineclsocarboxazideTranylcypromine. Selective MAO-A are: Clorgiline Moclobemidee Selective MAO-B are: Selegiline Deprenyl, Rasagline, Periphery, BLood brain barrier 