A nurse is preparing to administer medications to a 5-month-old infant.Tympanic temperature 39.2°C (102.6°F). Heart rate 84/min.Respiratory rate 30/min.Blood pressure 80/30 mmHg.Oxygen saturation 96% on 0.5 L oxygen via nasal cannula.Weight 7.2 kg (15.9 lb). The nurse should clarify the prescription for which medication?