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.
Diet - full liquid. A full liquid diet is made up only of fluids and foods that are normally liquid and foods that turn to liquid when they are at room temperature, like ice cream. You can NOT eat solid foods when you are on a full liquid diet. This diet is easier to digest than solid food. It gives you the proteins, fluids, salts, and minerals that you need for energy. For most people on a full liquid diet, the goal is to get 1,350 to 1,500 calories and 45 grams of protein a day.