Overview Efficacy and Tolerability of Sifrol® (Pramipexole) in Patients With Advanced Idiopathic Parkinson's Disease Status: Completed Trial end date: 1969-12-31 Target enrollment: Participant gender: Summary Assessment of daily maintenance dose of Sifrol®, L-dopa sparing effect, effect on tremor, depression, anhedonia and tolerability Details Lead Sponsor: Boehringer IngelheimTreatments: Pramipexole