Nexium (esomeprazole magnesium) is a prescription proton pump inhibitor (PPI) used to treat acid-related disorders including GERD, peptic ulcers, and Helicobacter pylori infections. As the S-isomer of omeprazole, this medication provides superior acid suppression for healing erosive esophagitis, preventing NSAID-induced ulcers, and managing gastroesophageal reflux symptoms. For patients seeking affordable acid reflux medications, working with licensed healthcare providers ensures appropriate diagnosis, proper dosing, and monitoring for potential long-term effects associated with prolonged PPI use.