Dear Ervin, I have been on Eldepryl for almost 3 years and have had no problems with it. I also started it before starting Sinemet ( 6 months later ), and it gave me back much of my lost energy. I know some people have had problems with it but most people seem to do well on it. All you can do is try it and see how it works for you. Good luck! Rosemary Russell (49, 3 yrs.) [log in to unmask]