Segun trade name, generic name Tolansetron Hydrochloride, is mainly used for the prevention and treatment of nausea and vomiting caused by cancer chemotherapy, as well as nausea and vomiting after surgical procedures. Tolansetron hydrochloride is a potent and selective 5-HT3 receptor antagonist with potent antiemetic effects. It is used clinically for the prevention and treatment of nausea and vomiting associated with cancer chemotherapy, as well as nausea and vomiting after surgical procedures. There are some contraindications to the use of Tolansetron Hydrochloride that should be taken seriously: it is contraindicated in those who are allergic to Tolansetron Hydrochloride or any other excipients, pregnant women and lactating women. It should be used with caution in patients with uncontrolled hypertension, as the drug may further increase blood pressure. In addition, headache, dizziness, vertigo, fatigue and adverse reactions such as abdominal pain and diarrhea may occur when taking this product, and patients should use it under medical supervision.