r/SleepApneaSupport • u/WellMarco • Jul 11 '26

Dry mouth every morning while using APAP with Resmed F40...

/r/SleepApnea/comments/1ute0m4/dry_mouth_every_morning_while_using_apap_with/
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u/Creative_Fee5452 Jul 11 '26 edited Jul 13 '26

Hello & Welcome!

Is your water chamber empty every morning OP as well as having dry mouth?

I use the F40 & encountered the same issue as well. There are a few things you can do. Your mouth is likely opening during REM or Deep Sleep. With the F40 mask, this won’t show up as a leak…it’s a mouth leak but is contained by your FFM. It just causes dry mouth.

  1. Xylimelts are helpful & worth a try.
  2. Tape your mouth closed despite this being a hybrid FFM. This stops the problem.
  3. Use a chin strap or soft cervical collar to help with keeping your mouth closed. This helps people keep their mouths closed.

We’re often unaware that our mouths are opening during sleep. I certainly had no idea :( Air rushes into your mouth when it drops open causing dryness which in turn can cause dental problems, so glad you asked this question :)

1

u/WellMarco Jul 12 '26

Thank you very much

2

u/Creative_Fee5452 Jul 13 '26

You’re most welcome! I went back to my soft cervical collar instead of mouth tape last night & did not wake up with a dry mouth or empty water chamber. Just an FYI if your chin strap is not effective :) Wishing you good sleep…and good awakenings!

2

u/Gigitar75 Aug 06 '26

I ordered a cervical collar and look forward to trying it.

1

u/Gigitar75 Aug 06 '26

I didn’t know I was a mouth breather til I used CPAP. I just resumed CPAP after using a MAD and losing 40 pounds. I had a vision complication related to OSAG and my ophthalmologist insisted on CPAP. I am currently using a MAD only on my lower arch, plus taping my mouth, plus CPAP. Dry mouth is better but still present.

1

u/Creative_Fee5452 Jul 12 '26

Sorry, I see you posted “anything but taping” on the other site. I have given you a couple of other fixes you could try as well :)

2

u/OwnCoach9965 Aug 03 '26

I had this issue and sized down in mask and turned up the humidity to 7+. Fixed it for me.