I work a 12 hour shift schedule and I drive 50 miles to work.How can I take xyrem and function on m. I also have had back surgery and I have to take loritab and soma for pain and I also have sleep apnea and use a cpap machine.Is this drug use possible? Does anyone have sleep apnea and narcolepsy? I am an industrial maintenance electrician at an advanced steel mill and handle high voltages up to 13.8 kv.