Final answer:
An unconscious overdose patient should be transported to a hospital on their side. The recovery position helps prevent choking and aspiration if the patient vomits and keeps the airway clear.
Step-by-step explanation:
An unconscious overdose patient should be transported to a hospital on their side. This position, known as the recovery position, helps prevent choking and aspiration if the patient vomits. It also helps keep the airway clear and allows any fluid to drain out of the mouth. The feet should not be elevated, as this could restrict blood flow.