Lisa -
I have RSD and TOS and took Zanaflex for well over a year and still take it
as needed. I found this to be a wonderful medication. It helped big time with spasms and in fact I used to take it before physical therapy and found that the
therapists could get allot more accomplished with me when I took it.

I also had more and less painful movement when I took it.
If it works for you you might want to consider a catapress patch. I have found that very helpful. Although thats a Blood pressure med it work similarly and has given me relief.

The big drawback of Zanaflex is that it can make you extremely sleepy.
I could count on going right to sleep for an hour whenever I took it. After that I was alright but I always had to account for being incapacitated for an hour.
Zanaflex and Tizanidine are the same medication.
I hope you find relief with it.

PS. I have taken many meds in search of relief that had weird and nasty side effects.
In comparison this one was very tolerable.