Aegis 40 mg (Omeprazole) — Effective Proton Pump Inhibitor for Acid-Related Disorders Aegis 40 mg contains omeprazole, a proton pump inhibitor that effectively reduces stomach acid production to help manage conditions such as gastroesophageal reflux disease (GERD), peptic ulcers, gastritis, and acid indigestion. By blocking the acid-producing pumps in the stomach lining, Aegis provides relief from heartburn, acid regurgitation, and irritation of the digestive tract, and supports healing of ulcers. This once-daily oral medicine is widely used in Pakistan and is available through major pharmacies without a strict prescription — though clinician guidance is recommended, especially for prolonged use.