I have been taking Zanaflex for several years for restless legs and it has always worked. All of a sudden it is no longer working for me. Especially on days when I have taken a walk or been a little more active than usual. I will have restless legs while sitting in a chair, driving, or as everyone who has it, trying to sleep. It has lasted for days now and I don't know what to do. I will see my doctor tomorrow, but thought I might ask if anyone out there has anything that helps them.