"That is extraordinarily rare. I've heard of maybe a dozen cases over my long career, most of those being back when the science was still new." He sipped his tea. "In the cases where it has happened, a readministration of the medication usually does the trick. Most actually go back to sleep on their own. And there is almost never a memory of the event. It has to be noted in the patient's file, though." He offered a small smile. All of his questions were understandable concerns.