Cimetidine is widely used in the treatment of gastrointestinal conditions. It is primarily prescribed to manage and heal ulcers in the stomach and intestines by reducing the production of stomach acid. It is also effective in treating gastroesophageal reflux disease (GERD), providing relief from heartburn and acid indigestion. Additionally, cimetidine is used to prevent stress ulcers in critically ill patients and to manage conditions like Zollinger-Ellison syndrome, where excessive stomach acid is produced. Beyond its gastrointestinal applications, it has been explored for its potential role in treating certain viral infections and skin conditions, such as warts, due to its immunomodulatory effects.