M has had obstructive sleep apnea since birth, she also does not require her adenoids/tonsils removed as they are to small to cause a problem. She really should have been on C-PAP but no matter how hard we have tried she just will not tolerate it. So most nights we can manage her with positioning (for her it is on her side with her throat open) but when she is sick we have used a medication (the name is not coming to me right now, funny being 3.30am I have no idea why lol, but it sounds like the one you have been prescribed, it is also used for asthmatics) and we have had great success with it.