Sonexa 4 mg Tablet contains Dexamethasone, a potent synthetic glucocorticoid with anti-inflammatory and immunosuppressive properties. It is primarily indicated for the prevention of nausea and vomiting associated with chemotherapy, particularly in patients undergoing Cisplatin-based highly emetogenic chemotherapy, as well as moderately emetogenic chemotherapy and combinations of Anthracycline and Cyclophosphamide.