Long-term Administration Study of SND 919 Tablets in Parkinson's Disease

Inclusion Criteria:

Patients with a diagnosis of Parkinson's disease (including juvenile parkinsonism)

(1) Patients meeting all of the following inclusion criteria

1. Patients of at least 20 years of age
2. In- or outpatients of either sex.
3. Patients in any stage on the modified Hoehn and Yahr severity scale

Exclusion Criteria:

• Patients with psychiatric symptoms such as confusion, hallucination, delusion, excitement, delirium, and abnormal behaviour.
• Patients with subjective symptoms derived from orthostatic hypotension.
• Patients with hypotension (systolic blood pressure <100 mmHg)
• Patients with concomitant illness such as severe cardiac, renal, and hepatic disease
• Patients with a current or past history of epilepsy
• Pregnant, possibly pregnant, or lactating women
• Patients receiving any other investigational products or who have received any other investigational product within 6 months of the study.
• Patients who judged incompetent to give consent
• Others judged by the investigator or co-investigator to be ineligible as subjects.