Parkinson's disease (PD) is a chronic, progressive neurological disorder characterized by both motor and non-motor symptoms. PD is the second most common neurodegenerative disorder after Alzheimer's disease and the most common movement disorder. PD has age-related pathology; it is present in 1-2% of the population over 60 years of age. The disease is characterized by a triad of disordered voluntary motor activity in the form of bradykinesia (slowness of movement) or even akinesia (absence of movement),rigidity and postural instability, and a resting tremor of the hands and less commonly the feet.

Inclusion Criteria:• Age ≥ 50 years. Both male and female will be included. Patients with Parkinson's disease on dopamine replacement therapy. Modified Hoehn and Yahr stage, MHY 1-4

Exclusion Criteria:• Atypical parkinsonism or drug-induced parkinsonism Breast feeding Pregnant women and women with planned pregnancy. Patients with significant liver and kidney function abnormalities. History/presence of acute heart disease Alcohol and / or drug abusers. Patients with known allergy to the study medications Other medical conditions that can interfere with results or endanger the participant.