Gabapentin
"My restless legs syndrome was actually whole body sort of vibrating, and came on very suddenly. 100 mg gabapentin, and I could sleep again! But every month had to add 100mg, got to 1000mg, then tried reducing 100 / month, realized after 2 months that I really needed the 900, not sure if that was withdrawal, but felt like I simply needed that much - so had a really good month. Then suddenly symptoms flared up, and even 1300 only just works. "