MADOPAR contains two active ingredients called levodopa and benserazide. MADOPAR belongs to a group of medicines called antiparkinsonian agents. Antiparkinsonian agents are used to treat Parkinson's disease and work on the central nervous system. The symptoms of Parkinson's disease are caused by a deficiency of a natural substance in the nervous system. MADOPAR helps to replace this substance. By improving muscle control, MADOPAR allows more normal movements of the body.