Zintec 150 Tablet contains Ranitidine 150 mg, a histamine H2-receptor antagonist used primarily to reduce gastric acid secretion. It is indicated for the treatment and prevention of conditions such as gastroesophageal reflux disease (GERD), peptic ulcer disease, Zollinger-Ellison syndrome, and erosive esophagitis. By competitively inhibiting H2 receptors on gastric parietal cells, Ranitidine decreases basal and stimulated gastric acid secretion, promoting ulcer healing and symptom relief. Zintec 150 is also utilized in the management of dyspepsia and to prevent stress ulcers in critically ill patients. The tablet is administered orally, typically once or twice daily, depending on the clinical condition and physician’s discretion. It is generally well-tolerated; however, potential adverse effects may include headache, dizziness, constipation, or diarrhea. Caution is advised in patients with renal or hepatic impairment, and dosage adjustments may be necessary. Although Ranitidine has been widely used, recent concerns regarding impurities have led to regulatory reviews; therefore, current prescribing should follow updated guidelines and safety information. Zintec 150 should be used under medical supervision, with attention to contraindications such as hypersensitivity to Ranitidine or other components. Patient adherence and monitoring are essential to ensure therapeutic efficacy and minimize risks.