Overview Effects of Coenzyme Q10 in PSP and CBD Status: Completed Trial end date: 2005-09-01 Target enrollment: Participant gender: Summary To compare the efficacy, safety and tolerability of Coenzyme Q 10 versus placebo in patients with atypical parkinsonian syndromes corticobasal degeneration (CBD) and progressive supranuclear palsy (PSP) ). Phase: Phase 2/Phase 3 Details Lead Sponsor: Lahey ClinicTreatments: Coenzyme Q10Ubiquinone