Antiemetic is a group of drugs used for the purpose of reducing the symptoms of vomiting and nausea for patients due to chemotherapy, motion sickness, pregnancy, after surgery... or due to a medical condition. there. Antiemetics have many different forms of use such as intravenous antiemetics, tablets, patches, syrups, intramuscular injections. When to prescribe intravenous antiemetics and how to use them?