Nexium 20mg is a prescription medication containing esomeprazole, a proton pump inhibitor used to reduce stomach acid production. Each pack contains 14 tablets of 20mg strength. This medication is commonly prescribed for treating acid reflux, heartburn, and other conditions related to excess stomach acid production. Nexium (esomeprazole) belongs to a class of drugs called proton pump inhibitors (PPIs). The medication works by blocking acid production in the stomach. The 20mg strength is typically used for maintenance therapy of gastroesophageal reflux disease (GERD), healing of erosive esophagitis, and treatment of heartburn. The tablets come in a distinctive purple package with clear labeling of the strength and quantity. This medication requires a prescription and should be taken as directed by a healthcare provider.