Review Question - QID 210073

A 51-year-old man presents to his primary care provider for intermittent shaking of his hands. For the last several years he has noticed this "shaking" when he brushes his teeth and prepares a cup of coffee in the morning. The shaking then gradually improves over the course of the day. His medical history is otherwise notable for hypertension and hyperlipidemia. His only home medication is pravastatin. The patient smokes half a pack per day of cigarettes and drinks 2-3 beers throughout the day. His family history is significant for Parkinson disease in his father. On physical exam, his temperature is 98.6°F (37.0°C), blood pressure is 159/84, pulse is 74/min, and respirations are 12/min. He has a high-frequency bilateral hand tremor elicited on finger-to-nose testing. His neurological exam is otherwise unremarkable. Which of the following medications should this patient be started on?