Selegiline prevents the breakdown of a chemical in your brain called dopamine (DO pa meen). Low levels of this chemical are associated with Parkinson's disease. Selegiline is used together with other medicines to treat symptoms of Parkinson's disease. Selegiline may also be used for other purposes not listed in this medication guide.
Eldepryl works to treat Parkinson's disease by altering the neurotransmitters in the brain. Normally, Eldepryl is used together with other medications in the treatment of symptoms associated with Parkinson disease. However, it should be noted that the drug will not cure the disease, but rather improve one's shakiness and muscle stiffness.