There is no such thing as a prescription for dry mouth and bitter mouth, and patients need to take scientific treatment to avoid damaging their health. Dry mouth and bitter mouth may be caused by improper diet, generally do not need to take special treatment. Or consider gingivitis, gastroesophageal reflux disease and other diseases, need to take medication for the cause. 1. Physiological factors: If you eat bitter melon, pure dark chocolate, pure black coffee and other foods, may lead to transient dry mouth and bitter mouth. This kind of situation is normal, reasonable diet can be relieved. 2. Gingivitis: dry mouth and bitter mouth may also be caused by gingivitis, patients can use hydrogen peroxide solution, iodine preparations under the guidance of a doctor, or antifungal mouthwash, such as chlorhexidine. After medication, the symptoms of the disease can be relieved. 3. Gastroesophageal reflux disease: Gastroesophageal reflux disease, due to the lower esophageal sphincter relaxation, esophageal clearance ability to reduce the delayed gastric emptying and other reasons, resulting in gastric contents refluxed into the esophagus, and even reach the pharynx, resulting in a dry and bitter mouth. Drugs that inhibit acid and promote gastric motility can be given under the guidance of a doctor. There are many reasons that lead to dry mouth and bitter mouth, we suggest that patients identify the cause of the disease in time and actively take relevant treatment measures.