Bitter mouth is usually related to gingivitis, reflux esophagitis, cholecystitis and other diseases, you can take antibacterial drugs, cholagogues and so on according to the cause. 1. Gingivitis: gingivitis itself does not cause bitter mouth, but if food impaction occurs, do not clean up the residual tissue in time, there may be bitter mouth, bad breath symptoms. Gingivitis requires topical oral medication, and iodized glycerin is commonly used. When combined with systemic inflammatory reaction, oral amoxicillin capsules, metronidazole and other antibacterial treatment as prescribed by the doctor. 2. Reflux esophagitis: When stomach acid secretion increases and refluxes into the esophagus and then into the mouth, it may cause bitter taste in the mouth. To treat this disease, oral medication to inhibit gastric acid, such as rabeprazole capsule, omeprazole capsule, etc., should be prescribed. 3. Cholecystitis: When the condition is serious, bile stasis can cause bitter mouth. For this disease need oral ursodeoxycholic acid and other drugs, with choleretic effect, can reduce bile stasis, relieve the phenomenon of bitter mouth. Bitter mouth, in addition to the above factors, may also be related to liver disease, tumors and other diseases, before the cause is not clear, it is recommended to consult a doctor in a timely manner, under the guidance of a physician to diagnose the cause of the disease and then carry out the treatment, the specific use of medication should be strictly in accordance with the requirements of the doctor. Do not blindly use drugs on your own, so as not to cause adverse consequences.