Parkinson's therapy L-DOPA MOA: dopamine precursor Tox: nausea, orthostatic hypotension, hallucination, wearing off, on-off phenomenon, ?accelerated disease Sinemet TM L-DOPA (dopamine precursor) + carbidopa (AADC inhibitor that doesn't cross BBB) PK: CR formulation prevents dyskinesia associated w/ excessive peak doses Madopar TM L-DOPA (dopamine precursor) + benserazide (AADC inhibitor that doesn't cross BBB) PK: CR formulation prevents dyskinesia associated w/ excessive peak doses -capone Tolcapone, entacapone MOA: COMT inhibitor (extends t1/2 of L-DOPA) Dopamine agonists Pramipexole, bromocriptine, pergolide, ropinirole MOA: name says it all Less effective than L-DOPA but no chronic side effects Good Rx for early mild PD Controversial prophylaxis for PD Tox: nausea, somnolence, hallucination, orthostatic hypotension Anticholinergics Benzotropine, trihexyphenidyl, diphenhydramine No role in modern Parkinson's therapy Amantadine MOA: weak anticholinergic, weak DA releaser, weak Glu blocker (unclear mechanism in PD) Synergizes with L-DOPA Selegine MOA: MAO-B inhibitor Controversial prophylaxis for PD Coenzyme Q10 Controversial prophylaxis for PD Surgery MOA: inactivation of GPi and SN via ablation or high-frequency stimulation Rx advanced prominent tremor PD and sinemet-induced dyskinesia