When we went to see our Nuerologist he explained that the sooner you are on the medication the sooner the dopamine can be replaced in your brain. I think with every tablet there are side effects and these have to be considered and yes there is a time limit for these kind of tablets but we look at it as my hubby is now 60 and if it last 10 years he will be 70 and then it will be time to review a new tablet but in the meantime he will have helped halt some of the progression of this disease. It is a learning curve but hopefuly you will have a good nuerologist and PD nurse to help you.
Sue