Inclusion Criteria:

1. Is able to read, understand, and provide written, dated informed consent prior to Screening Visit.
2. Is male or female, between 18 and 85 years of age at Screening Visit.
3. Is diagnosed with idiopathic PD that meets UK Parkinson's Disease Society (UKPDS) Brain Bank Clinical Diagnostic Criteria
4. Has experienced dyskinesia
5. Has stable peak-effect dyskinesia
6. Has more than one hour of "ON" time with troublesome dyskinesia

Exclusion Criteria:

1. Has undergone surgery for the treatment of PD
2. Has a current diagnosis of Substance Use
3. Has psychiatric diagnosis of acute psychotic disorder or other psychiatric diagnoses
4. Has current seizure disorders requiring treatment with anticonvulsants.

Other criteria related to other medical conditions to be referred to the protocol.