Ondem 4 Tablet 10s are part of a class of drugs known as "anti-emetics" and are generally used to prevent nausea and vomiting, which typically follow cancer chemotherapy, radiation therapy, or surgery. Vomiting is the body's natural response to nausea, which is an uncomfortable sensation in which a person feels the want to aggressively empty their stomach. Ondanestron, an ingredient in Ondem 4 Tablets 10s, prevents nausea and vomiting by inhibiting the function of serotonin, a neurotransmitter in the body. Ondem 4 Tablet 10's therefore stops the feeling of nausea and vomiting brought on by ailments like surgery, cancer treatment, pregnancy, or motion sickness.Disclaimer:For more information contact your physician.