Introduction: Ondansetron, a 5-hydroxytryptamine3 receptor antagonist widely used in the prevention and treatment of chemotherapy-induced nausea and vomiting, is associated with various unusual adverse drug reactions. In this paper, we describe a hypersensitivity reaction to a single intravenous dose of ondansetron.
Case Presentation: A 19-year-old woman presented to the emergency department of our institute with 3-4 episodes of nausea, vomiting and epigastric distress.