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Medicine

Mechanisms of Opioid-Induced Respiratory Depression and Reversal

Quick fact

Opioid-induced respiratory depression occurs because opioids bind to mu-opioid receptors in the brainstem, reducing the brain's sensitivity to carbon dioxide—the main chemical drive to breathe. Naloxone reverses this by competitively displacing opioids from those receptors, often restoring normal breathing within 2–5 minutes when given intravenously.

Why this is interesting

You may know that opioids can stop breathing, but have you ever wondered exactly how they do it—and why a single drug like naloxone can bring someone back within minutes?