Medically reviewed by Valerie Cacho, MD Key Takeaways Moisture in a CPAP can build up due to the mismatch of temperature inside and outside of the tubing.Use a heated tube to prevent water from ...

If you use a continuous positive airway pressure (CPAP) machine for obstructive sleep apnea (OSA), you may breathe better at night. But you may also have dry mouth in the morning. Dry mouth is a ...