Clonazepam
"I have taken 1 mg oral tablets of Clonazepam for several years.  There are days I do not take it because it can create logginess. My wife was going to have to move to another room due to my every few seconds of leg movement while sleeping. This medication has completely eliminated the  restless leg kicking. 
The side effects are the feeling of logginess with difficulty getting up in the morning."