Parkinson’s disease symptoms

A patient with Parkinson’s disease has been experiencing worsening of their
symptoms of tremor, rigidity and bradykinesia.  The healthcare provider prescribed a triple combination drug containing carbidopa 12.5 mg, levodopa 50 mg. and entacapone 200 mg.  (Stalevo) orally one tablet six times per day.

1. What are the benefits of a triple combination drug?
2. Discuss how each individual drug: carbidopa 12.5 mg, levodopa 50 mg. and entacapone 200 mg. works to help improve the patient’s symptoms.