Does Sinemet Cause Discomfort In Legs?

I have been on sinemet for 5 1/2 years for PLMD. Recently I have needed increasing dosages to last me though the night. When I came off it for a week, I noticed that my legs didn t bother me in the evenings as they had been, so think it was making my legs worse. Dr. put me on lorazepam instead, but it takes 2+ hours to get to sleep because of my leg movements. I had been on zopiclone for a week when I initially went off the sinemet. Which is better for me in the long run?