Emefilm 4 mg Tablet belongs to the Antiemetics drug group that is used for treating nausea as well as vomiting caused by other medical treatments such as surgery chemotherapy and radiation. This medicine will block the chemical serotonin from releasing in your gut and your central nervous system. This will prevent vomiting and nausea. Emefilm 4 mg Tablet is available in four different forms that can be taken orally; tablet disintegrating (dissolving) tablet solution and film. This medication is a 5-HT3 receptor antagonist prescribed for nausea and vomiting caused by cancer chemotherapy radiation therapy and surgery. It blocks serotonin receptors in the vomiting center and on nerves supplying the digestive system. It comes as a tablet a rapidly disintegrating (dissolving) tablet and an oral solution to take by mouth and injection administered intravenously. The first dose of this medication is usually taken 30 minutes before the start of chemotherapy 1 to 2 hours before the start of radiation therapy or 1 hour before surgery. Additional doses are sometimes taken one to three times a day during cytotoxic Chemotherapy or radiation therapy and for 1 to 2 days after the end of treatment.