Dry mouth and bitter mouth in the elderly can be used as appropriate gentian diarrhea liver pill, guide red pill, Qiju chrysanthemum dihuang pill and so on. Elderly people have weak spleen and stomach, the use of drugs need to be more cautious, the specific use of drugs is recommended to consult a professional physician. 1.gentian liver pill, by gentian, chaihu, scutellaria, gardenia and so on composition. It has the effect of clearing the liver and gallbladder and promoting dampness and heat. It is used for damp-heat in the liver and gallbladder (damp-heat evils accumulated in the liver and gallbladder), dizziness and redness in the eyes (dizziness and redness of the eyes), tinnitus and deafness, ear swelling and pain, dystocia (pain in the area of the coxae and ribs), bitterness in the mouth, and redness and astringent pain in the urine (fever, unobstructed and painful sensation when urinating), etc.. Pregnant women should be cautious. 2.guide red pill, have forsythia, gardenia, xuan shen, red peony and so on. It has the effect of clearing away heat and fire (removing heat and fire from the body), diuretic and laxative. It is used for mouth and tongue sores caused by internal heat, sore throat, heart and chest vexation (irritability and sultriness), short and red urine (small amount of urine, dark yellow color), constipation and so on. Avoid eating spicy and greasy food during the period of taking the medicine. 3. Chinese wolfberry and chrysanthemum dihuang pill is composed of Chinese wolfberry, chrysanthemum, ripened dihuang, cornelian cherry and so on. It has the effect of nourishing the kidney and nourishing the liver. Used for liver and kidney yin deficiency, dizziness, tinnitus, shyness, fear of light, tears in the wind, blurred vision. Not suitable for patients with cold and fever.