Minisec 20 mg is a prescription medication containing Omeprazole, a proton pump inhibitor used to reduce stomach acid production. Each pack contains 14 capsules designed for the treatment of various acid-related conditions including gastric ulcers, acid reflux, and heartburn. Omeprazole works by blocking the proton pumps in the stomach that produce acid. The medication should be taken as directed by your healthcare provider, typically once daily before a meal. The capsules should be swallowed whole with water and should not be crushed or chewed. Store at room temperature away from moisture and heat. This medication requires a prescription and should only be taken under medical supervision. Common side effects may include headache, stomach pain, and nausea.