Gerdnil 30 mg contains Lansoprazole, a proton pump inhibitor (PPI) used to reduce excess stomach acid. It is commonly prescribed for the treatment of gastroesophageal reflux disease (GERD), acid reflux, peptic ulcers, and erosive esophagitis. By blocking acid production in the stomach, Gerdnil helps relieve symptoms such as heartburn, chest discomfort, and indigestion, while promoting healing of the gastrointestinal lining.