A Parallel Group Study to Evaluate the Efficacy and Safety of Ropinirole for 26 Weeks and to Further Evaluate the Incidence of Augmentation and Rebound for a Further 40 Weeks Open-label Extension Treatment Period in Subjects Suffering From Moderate to Severe Restless Legs Syndrome.

This is an initial placebo-controlled study followed by open treatment evaluating the effectiveness and tolerability of ropinirole long-term in patients with moderate to severe Restless Legs Syndrome.