Manifestations of anaphylaxis may occur within seconds or minutes after exposure to a causative antigen. Almost any substance can be implicated as a potential precipitating agent. Reactions may be slow, progressive, or rapidly fatal within minutes. Any healthcare worker involved in the administration of medications or the care of patients, whether a doctor, dentist, nurse, paramedic or allied health professional, is ethically obliged to be able to appropriately manage the potential consequences of such an action -a life-threatening anaphylactic reaction.