There are many causes of dry mouth. Dry mouth most commonly occurs as a side effect of medications that cause decreased saliva production, including high blood pressure medications, antihistamines, antidepressants, diuretics, nonsteroidal anti-inflammatories, narcotics, and many others.
Liquid diet: The Liquid diet is the restriction of solid food intake, and replacement of solid food with liquids. In hospitals, liquid diets are prescribed by doctors for a number of reasons for patients who are unable to consume solid foods. Liquid diets may be prescribed following surgery or as a preparation for certain medical procedures.
Sample Menu of a Clear Liquid Diet. While a clear liquid diet is a rather boring diet, it's only temporary. Here's a sample menu idea of what you can have. Breakfast. One cup apple juice; One cup coffee; One dish flavored gelatin; Morning Snack. One cup apple juice; One popsicle; One glass water; Lunch. One cup tea One cup beef broth; One glass water