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.
This liquid protein diet is substituted for full course meals, and acts as a liquid supplement for all the nutrition that the body needs. Liquid protein diets can be used to give a head start to the process of dieting and weight loss. Many individuals find it excruciating to sustain their dietary regime with liquid protein for a long time. Liquid protein diets are of many varieties, though all of them are particularly low in carbohydrates.