I've found that Rowasa enemas give me a little bit of the "jimmy legs"-- a restless feeling in my legs that feels similar to the very beginning of numbness. Although I take Klonopin for sleep issues, it wasn't addressing the restless legs, and I found myself walking around the house shaking my legs instead of sleeping at night.
I was in my local natural foods store and saw Hyland's homeopathic Restful Legs medicine(http://www.restfullegs.com/) and figured that $7.99 wasn't too much to pay for some relief/sleep. The pills are small tablets that you melt under your tongue. I've taken them almost every night as a preventive measure, but haven't experienced the same restless legs since.