What is the antidote for opioid overdose?

• A. Flumazenil
• B. Acetylcysteine
• C. Naloxone
• D. Atropine

Answer: (C)

Naloxone is the antidote specifically designed to reverse the effects of opioid overdose. In cases of overdose, opioids bind to the mu-opioid receptors in the brain, leading to respiratory depression, sedation, and potential death. Naloxone works as an opioid antagonist, meaning it competes with opioids for binding to these receptors, effectively displacing them and reversing the toxic effects.

Within a few minutes of administration, whether given intranasally or via injection, naloxone can restore normal respiratory function and level of consciousness in an individual suffering from an opioid overdose. Its rapid action and safety profile make it a vital tool in emergency situations.

Other options do not serve this purpose: flumazenil, for instance, is used for benzodiazepine overdose, acetylcysteine is an antidote for acetaminophen toxicity, and atropine is typically used in cases of organophosphate poisoning or bradycardia. Understanding the specific antidote for each type of overdose is crucial for effective emergency response.