Effect of Rasagiline on Balance in Parkinson's Disease as Measured by Computerized Posturography

Patients in each arm will have computerized dynamic posturography performed at baseline prior to taking first tablet as well as at 4 weeks and 8 weeks. In the adjuvant therapy arm, subjects will be evaluated on rasagiline but in a functional OFF state for their other Parkinson disease medications.

Rasagiline 1 mg oral tablet daily will be administered to study participants.

Placebo 1 mg oral tablet daily will be administered to study participants.