How long requip (ropinirole) is effetive for parkinsosn? only several years?

No guarantee it is:: Review the fda summary of trial data in the pi at: http://us.Gsk.Com/products/assets/us_requip.Pdf Requip (ropinirole) is only a treatment for some symptoms, not a cure, with no certainty of either effectiveness, or duration for those for whom it might be useful. Like most treatments, the issues are too complex; the reason for clinical trials to track relative benefits vs. Downsides. Keep looking for more.