Emadon syrup contains ondansetron which is used to help stop the nausea (sick feeling) and vomiting which can occur after certain treatments. Emadon syrup should only be used to treat the nausea and vomiting for which it has been prescribed. Adults: The management of nausea and vomiting induced by cytotoxic chemotherapy and radiotherapy and for the prevention of post-operative nausea and vomiting in adults. Paediatric Population: Ondansetron is indicated for the management of chemotherapy-induced nausea and vomiting (CINV) in children aged ≥6 months. No studies have been conducted on the use of orally administered ondansetron in the prevention and treatment of PONV in children aged ≥1 month administration by IV injection is recommended for this purpose.