I Am Searching For An Answer To My Husband's NON

I am searching for an answer to my husband's NON sleeping "disorder". I have been to an ENT for sleep apnea, his Primary care has given him a medication for sleep, but even after almost one year he is still having trouble staying asleep. I was looking up Luvox to see if that may be something for him. I have also scheduled an appt. with a sleep disorder Dr. because I am baffled. Any suggestions?