ESO 40 Injection by Chemisis Pharmaceuticals contains Esomeprazole Sodium, a proton pump inhibitor (PPI) used to reduce the amount of acid produced in the stomach. Esomeprazole is commonly used for the treatment of gastroesophageal reflux disease (GERD), erosive esophagitis, and Zollinger-Ellison syndrome. It is also used to prevent gastric ulcers caused by nonsteroidal anti-inflammatory drugs (NSAIDs) and to treat conditions where the stomach produces too much acid. ESO 40 Injection is administered intravenously, typically in a hospital or clinical setting under the supervision of a healthcare professional. The standard dosage for adults is usually 40 mg once daily, though the exact dosage and duration of treatment depend on the specific condition being treated and the patient’s response to therapy. This method ensures rapid onset of action, making it suitable for patients who are unable to take oral medication. Common side effects may include headache, nausea, diarrhea, stomach pain, and injection site reactions such as redness or swelling. Serious side effects are rare but may include severe allergic reactions, low magnesium levels, and Clostridium difficile-associated diarrhea.