The advice above are good ones. Also your doctor needs to know to jot this on your chart as well. You might even be able to call instead of waiting for that appointment!
Baclofen if they are very cramped (not realeasing) is a good one, the other's are also.
Even though the cramps maybe coming from wrong nerve impulses, I read somewhere, and then tried it...use a dry brush on your legs, to help circulation (i make mine soapy as its still bristly and does the job), massaging them prior to laying down does seem to help mine at times. Can't hurt!
I was dx'd with RLS about , gee 15yrs ago. I went 6days one time without any sleep do to the legs. What a time that was. Like Rhonda, i now get them in my arms. What a crappy feeling for sure. I found that requip is the best, but had been on simminet also, before requip. Vitamin E is also recommended. That's if your legs and/or arms feel an intense urge to move them. Or they move on their own. Also a feeling inside of them that you just cant seem to get rid of. From what you've described it sounds more like cramps/spasticity of a sort.
If you do have to wait for the appointment, pls try the soapy bristle brush that will increase circulation and help massage the muscles. I cant say why this works (i can for circulation), but it seems to at least help.
Every day brings us closer to what we reach for .........in all things.