Nexium is the trade name, generic name of esomeprazole magnesium enteric-coated tablets, this product is a proton pump inhibitor. Esomeprazole magnesium enteric-coated tablets can reduce gastric acid secretion, clinically used in the treatment of gastroesophageal reflux disease; in addition, it can also be used in combination with other drugs to eradicate Helicobacter pylori; it can also be used in the treatment of peptic ulcer. During medication, patients may experience adverse reactions such as blurred vision, hypomagnesemia, abnormal taste, hair loss, etc. Known hypersensitivity to esomeprazole, other benzimidazole compounds, or any other components of this product is prohibited; in addition, this product should not be combined with nelfinavir. If there is a need for medication, it is recommended to visit the hospital in a timely manner, follow the doctor’s instructions to standardize the use of medication, if during the use of medication, the need to use other drugs, should be informed to the doctor in advance in order to avoid the occurrence of adverse drug reactions.