TESM-20/40 is used for Acidity, Gastro-Esophageal Reflux Disease, Heartburn, Flow Of Bitter Fluid Into the Mouth, Upper Abdominal Pain, Swallowing Problems and other conditions. Esomeprazole Tablet contains Esomeprazole as an active ingredient. Esomeprazole Tablet works by blocking the activity of proton pumps and thus decreasing the amount of acid produced in the stomach. Esomeprazole Tablet is used for the treatment, control, prevention, & improvement of the following diseases, conditions and symptoms: Acidity, Gastro-Esophageal Reflux Disease, Heartburn, Flow Of Bitter Fluid Into the Mouth, Upper Abdominal Pain, Swallowing Problems. Esomeprazole Tablet improves the patient\'s condition by performing the following functions: Blocking the activity of proton pumps and thus decreasing the amount of acid produced in the stomach. Esomeprazole Tablet is composed of the following active ingredients: esomeprazole (40MG). The following is a list of possible side-effects that may occur from all constituting ingredients of Esomeprazole Tablet. This is not a comprehensive list. These side-effects are possible, but do not always occur. Some of the side-effects may be rare but serious. Consult your doctor if you observe any of the following side-effects, especially if they do not go away. Headache, Itching Of Skin, Increased Liver Enzymes, Nausea, Abnormal Sensations, Tingling.