narcolepsy
"I started Xyrem about 3 months ago, and I couldn't happier. I tried Nuvigil, Wellbutrin, Ritalin, and Prozac, and nothing kept me from sleeping 14 hours a day with hallucinations and cataplexy. After just a few weeks, I was able to stay awake ALL DAY LONG, and I haven't had ANY cataplexy in the past two months. I also got to cut my stimulant use by 2/3 during the day. I was nauseated at first, but after a few weeks it went away. I have also lost 30 pounds without trying after starting this medicine, even though it makes me hungry at night. I still have sleep attacks, but they are usually once every one or two weeks. I would much rather have that than everyday!"