Granisetronum is primarily used as an antiemetic to prevent nausea and vomiting caused by chemotherapy, radiotherapy, and surgery. It is particularly effective in managing acute and delayed nausea associated with cancer treatments. The chemical works by blocking serotonin receptors in the brain and gut, which are involved in triggering the vomiting reflex. It is often administered orally, intravenously, or via transdermal patches, providing flexibility in treatment options. Granisetronum is also used in postoperative settings to reduce the risk of nausea and vomiting in patients recovering from anesthesia. Its high efficacy and minimal side effects make it a preferred choice in clinical settings for managing emesis.