Omeprazole Injection

Category: Proton pump inhibitor (PPI)
Form: Injectable solution for intravenous (IV) administration

Uses:

• Treatment of peptic ulcer disease, including gastric and duodenal ulcers.

• Management of gastroesophageal reflux disease (GERD) with erosive esophagitis.

• Prevention and treatment of stress-induced gastric bleeding in critically ill patients.

• Used in Zollinger-Ellison syndrome, a condition causing excessive stomach acid production.

Mechanism of Action:

• Omeprazole selectively inhibits the H⁺/K⁺ ATPase (proton pump) in gastric parietal cells.

• Suppresses gastric acid secretion more effectively than H₂ receptor antagonists.

• Reduces both basal and stimulated acid secretion, increasing gastric pH and promoting ulcer healing.

Administration:

• Given as a slow intravenous injection or infusion in hospital settings.

• Usually reserved for patients who cannot take oral medication due to vomiting, surgery, or critical illness.

• Dosage and duration depend on the condition being treated.

Side Effects:

• Gastrointestinal: nausea, vomiting, diarrhea, abdominal pain.

• Metabolic: headache, dizziness, electrolyte imbalance (rare).

• Injection site reactions: pain, redness, or thrombophlebitis.

• Rarely: allergic reactions, hypomagnesemia with prolonged use.

Precautions:

• Monitor liver function in patients with hepatic impairment.

• Use cautiously in patients with severe electrolyte disturbances or history of hypersensitivity to PPIs.

• Avoid abrupt discontinuation in long-term therapy for acid-related disorders.

Summary:
Omeprazole Injection is a proton pump inhibitor used to reduce stomach acid in conditions like ulcers, GERD, stress ulcers, and Zollinger-Ellison syndrome. It works by blocking the proton pumps in the stomach lining, effectively lowering acid secretion. Administered intravenously, it is mainly used for patients unable to take oral medication. Side effects are generally mild, mostly gastrointestinal or related to the injection site.