I have just started using a CPAP machine, for the treatment of sleep acnea. I would like ask how long does it normally take for the treatment to start showing some results. I have used for four days. I have noticed small improvement when I awake, not as tired. Three hours later I fell like I still need a nap. I also wake up during the night with a dry throat. May I be breathing thru my mouth while sleep. How long should I wait before thinking about a change. Thanks.
Once you are able to sleep 4 or more hours with the device you should feel improvement. As you state you have a dry mouth upon waking I am concerned your mouth may be opening causing a loss of treatment. This could be the reason you still feel you need a nap. Call your CPAP provider and ask about chinstraps or full face masks. Also, followup with your doctor to assure there are no other concerns causing a delay in your symptom relief.