references
  
      Mayo Clinic: “Dry mouth”
    
      Cleveland Clinic: “Dry Mouth (Xerostomia)”
    
      Mayo Clinic: “Sleep Apnea”
    
      National Institute of Dental and Craniofacial Research: “Dry Mouth”

Is this an emergency? If you are experiencing serious medical symptoms, please see the National Library of Medicine’s list of signs you need emergency medical attention or call 911.

Waking up with a dry mouth could be a sign you're drinking caffeine or alcohol too late in the day — and not getting enough water.

Image Credit: maroke/iStock/GettyImages

The Refresh is helping you freshen up on your oral-care knowledge and upgrade your dental-hygiene routine.

Image Credit: maroke/iStock/GettyImages

The Refresh is helping you freshen up on your oral-care knowledge and upgrade your dental-hygiene routine.

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      Mayo Clinic: “Dry mouth”
    
      Cleveland Clinic: “Dry Mouth (Xerostomia)”
    
      Mayo Clinic: “Sleep Apnea”
    
      National Institute of Dental and Craniofacial Research: “Dry Mouth”