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.
Clear Liquid Diet Patients may be instructed to drink only clear fluids. Clear liquids are those that you can see through and include clear juice, broth, hard candy, ice and gelatin. Clear liquid diet options include: 1  Pedialyte. 2  Gatorade. 3  Water. 4  Clear broth such as chicken or beef. 5  Clear fruit juice without pulp such as apple, grape and cranberry (avoid orange and tomato juice) 6  Tea or coffee with added sweetener (no cream or milk) 7  JELL-O, popsicles and hard candy.