Primarily used as an antiemetic, it effectively prevents nausea and vomiting caused by chemotherapy, radiotherapy, and postoperative conditions. It works by blocking serotonin receptors in the brain and gut, reducing the signals that trigger vomiting. Often administered in hospitals, it is available in oral and injectable forms, making it versatile for different patient needs. Its efficacy and tolerability make it a preferred choice in managing acute and delayed emesis in cancer patients.