This study investigates whether an investigational medication can slow the progression of Parkinson's Disease, a condition that affects movement and can cause tremors, stiffness, and balance problems. The purpose of this study is to understand how the investigational medication impacts the progression of these symptoms over time.

Participants will be randomly assigned to different study arms, where they will either receive the investigational medication or a placebo. A placebo is an inactive substance that looks like the investigational medication but does not contain any medicine. Participants will undergo regular assessments to monitor their condition.

• Who can participate: Participants must be adults aged 18-75 diagnosed with Parkinson's Disease. Additional eligibility criteria include stable medication regimens and no history of severe psychiatric disorders.
• Study details: Participants will be placed in different study arms to receive either the investigational medication or a placebo. A placebo is an inactive substance that looks like the investigational medication but does not contain any medicine.