This drug is mainly prescribed to patients who are suffering from ulcers and for patients who have abnormally high stomach acidity. Nexium is a medicine that can also be taken in in order to treat Gerd (a medical condition that is also known as gastro esophageal reflux disease) and also Duodenal Ulcers. However, Esomeprazole can also be used for some other purposes that have not been listed here. Ask your personal physician for more information.