Final answer:
Naloxone is an opioid antagonist used to reverse the effects of opioids in emergency situations such as overdoses, particularly with morphine.
Explanation:
Naloxone is an opioid antagonist that acts by binding to endorphin receptors, preventing opioids from producing their intended effects. It is commonly used as an emergency treatment for opioid overdoses, including those involving morphine. Naloxone quickly reverses the effects of opioids, helping individuals wake up and maintain breathing until further medical assistance is available.
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