dry mouth after CPAP therapy.

I am new to CPAP therapy and I feel dry mouth whenever I woke up in the middle of the night as I use CPAP machine, the machine is not having a humidifier I suppose, What can I do.

You are most likely breathing through your mouth. You jaw relaxes after you get to sleep and moves back and your mouth opens. This creates an air leak. Find a way to keep your mouth closed. Some use head bands, some put tape over their mouth and I personally use a mouth guard. You can also try various mouth rinses and such which I found pretty useless or Xylimelts (not sure of spelling) which do help some. They are little mint type candy that you place between cheek and jaw and they do last all night.

The humidifier is that clear thingy attached to your machine. Use distilled water to fill the humidifier chamber to the fill line. Hopefully your machine is already set for the humidifier and will automatically start working for you. I'm with wiredgeorge, though...you are most likely breathing through your mouth.

A simple remedy for mouth breathing is to place your tongue against the roof of your mouth with the tip of your tongue against the backsides of your upper front teeth. This is restful. Once you turn your machine on, your treatment pressures will apply light suction to keep your tongue in position all night. Close your lips. Add some soothing thoughts such as: I'm ready to go to sleep now. Everything is where it's supposed to be. When I wake up in the morning everything will be right where I left it and my mouth will be closed. This feels so comfortable...etc." And then, allow yourself to drift off into sleep while you're still thinking these thoughts. The power of our minds is so amazing. This was how I cured a life-long mouth-breathing habit. It really worked.

I use wide blue painter's tape. I also cover the tape with an elastic sport wrap that I get at Wallgreens. It looks like ace bandage. I use enough to just keep a little pressure on it so it doesn't come off. I twist it together behind my head over the mask strap so it doesn't slide down my neck. The elastic in the wrap will hold the twist without coming apart. Been doing this for years.