Selegiline is used to treat Parkinson’s disease. Parkinson’s disease is associated with low levels of a chemical called dopamine (doe PA meen) in your brain. The exact way that selegiline works is unknown. However, it is believed that selegiline prevents the breakdown of dopamine in your brain. Selegiline is usually added to a treatment regimen after levodopa/carbidopa therapy begins to deteriorate.

Selegiline is used to treat the stiffness, tremors, spasms, and poor muscle control of Parkinson’s disease. It is also used to treat the same muscular conditions when they are caused by drugs such as chlorpromazine (Thorazine), fluphenazine (Prolixin), perphenazine (Trilafon), and others