Naloxone is an example of which pharmacologic action?

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Multiple Choice

Naloxone is an example of which pharmacologic action?

Explanation:
Naloxone acts as a competitive antagonist at opioid receptors, mainly mu receptors. It binds with high affinity but has negligible intrinsic activity, so it blocks the receptors and displaces any opioid agonists without activating them. This reverses opioid effects such as analgesia and respiratory depression, which is why naloxone is used to treat opioid overdose. It is not a full agonist (which would produce opioid effects), not a partial agonist (which activates receptors but to a lesser extent), and it is not a kappa agonist (which would stimulate the kappa receptor).

Naloxone acts as a competitive antagonist at opioid receptors, mainly mu receptors. It binds with high affinity but has negligible intrinsic activity, so it blocks the receptors and displaces any opioid agonists without activating them. This reverses opioid effects such as analgesia and respiratory depression, which is why naloxone is used to treat opioid overdose. It is not a full agonist (which would produce opioid effects), not a partial agonist (which activates receptors but to a lesser extent), and it is not a kappa agonist (which would stimulate the kappa receptor).

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