Problem: Medical management of the patient with Parkinson's is usually directed toward control of symptoms with drug therapy, supportive therapy, physiotherapy, and possibly pschotherapy. Pharmacotherapy can be fairly complex in these patients because there are several types of antiparkinsonian drugs with different mechanisms of action. The physician works with the patient to achieve the most effective regimen and often involves trial-and-error periods. Why can't we just give oral dopamine as replacement therapy? What medication do we give instead?