The cause of dry mouth and bitterness in 65-year-olds is generally considered to be caused by an exuberant fire in the liver and gallbladder or an exuberant fire in the stomach (the stomach is full of fire and heat). 1. Excessive fire of liver and gallbladder: usually love to be angry, liver qi stagnation (liver qi is not smooth), the long time of depression, resulting in fire, liver and gallbladder fire, symptoms seen in the dry mouth and bitter mouth, accompanied by chest and ribs (chest and ribs part of the collective term) full of boredom, irritability, red face and eyes, dry stools, urination (urinary volume is small, the color of the deep yellow), etc., you can take the Longdian Diarrhea Liver Soup in order to clear up the actual fire of the liver and gallbladder. 2. Excessive fire in the stomach: a normal diet favoring greasy, undigested food, resulting in an exuberant fire in the stomach, symptoms such as dry mouth and bitterness, accompanied by burning heat in the stomach, dry stools, and easy to eat and hunger, etc., can be taken to clear the stomach to clear up the fire in the stomach (to remove the fire in the stomach). For the 65-year-old dry mouth, there are many reasons, it is recommended to consult a regular hospital, under the guidance of the doctor’s diagnosis and treatment with medication, do not take medication to delay the condition, drink more water, eat a light diet.