Medications for Parkinson's disease are used to manage symptoms of Parkinson's, restless legs syndrome, and sometimes to treat certain types of tremors. These medications also have other uses, such as treating influenza A. They work by either increasing dopamine levels in the brain, mimicking dopamine, or blocking acetylcholine to help control movement. Common classes include dopamine agonists, anticholinergics, and MAO-B inhibitors. Dopamine agonists like pramipexole (Mirapex) and ropinirole (Requip) are usually taken as oral pills. Anticholinergics, such as benztropine mesylate (Cogentin), can be taken orally or as an injection. MAO-B inhibitors like selegiline (Eldepryl) are typically taken as oral pills. These medications come in various forms, including extended-release options like carbidopa/levodopa ER, to help manage your symptoms effectively.