Treatment: Dopamine agonists
Drugs that mimic dopamine, called dopamine agonists, may be used to delay the movement-related symptoms of Parkinson's. They include Apokyn, Mirapex, Parlodel, and Requip. Apokyn, an injectable, may be used when the effects of levodopa begin to wear off. Side effects may include nausea and vomiting, drowsiness, fluid retention, and psychosis.