Waking up with a dry mouth once in a while is common. Sleeping with your mouth open, a stuffy nose, dry bedroom air, or not drinking enough during the day can leave your mouth feeling parched by morning. But if it happens regularly, disrupts your sleep, or comes with other symptoms, it may be a sign that something needs attention.
Dry mouth, also called xerostomia, occurs when there is not enough saliva to keep the mouth moist. Saliva helps with speaking, tasting, chewing, and swallowing. It also helps protect teeth
