Esomeprazole (Emep) 40mg Lyophilized Powder for Injection (IV) 5ml Vial is a medication primarily used to reduce stomach acid production. It is commonly prescribed for conditions such as gastroesophageal reflux disease (GERD), ulcers, and Zollinger-Ellison syndrome. This product comes as a lyophilized powder, which is reconstituted with sodium chloride (0.9%) before being administered as an intravenous (IV) infusion. The vial contains 40mg of Esomeprazole. It works by inhibiting the proton pump in the stomach lining, reducing the production of stomach acid. Always follow your healthcare provider's instructions for proper administration.