Although there is no medication currently available that can cure or slow down the progression of Parkinson's disease, several medications are available that can help relieve symptoms of this condition. Levodopa is the most common medication used for treating Parkinson's disease.
Levodopa clearly has changed the lives of millions of PD patients. They now live longer and more rewarding lives and have much less and slower disability compared to before its availability. This positive effect is felt for many years...even up to 11-15 years and beyond. However, levodopa is not a cure. It does not relieve all symptoms. Not all patients respond to it beautifully, although most do respond well. It also has it side effects.