What are the benefits of a triple combination drug?

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A patient with Parkinson’s disease has been experiencing a worsening of their symptoms of tremors, 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.