What is the dose that the dr. started you out with? The "falling asleep" aspect of the drug might be due to the disease itself when they reported the side effect in clinical trials. When comparing Parkinson's (the drug was first approved for this) to placebo and RLS and placebo; it was found that the disease (Parkinson's) maybe more of a factor in itself and not the drug.

In other words, these people maybe falling asleep due to their Parkinson's and not the drug. I say just be careful and start out with the low dose.