Which term best describes a drug that blocks the effects of opioids by occupying endorphin receptors?

Which term best describes a drug that blocks the effects of opioids by occupying endorphin receptors?

• A. Narcotic antagonist
• B. Benzodiazepines
• C. Detoxifiers
• D. Opioid agonists

Answer: (A)

Blocking opioid effects happens when a drug acts as an antagonist at opioid receptors, occupying the receptor without activating it so that opioids cannot exert their effects. Narcotic antagonist best describes this mechanism, because it binds to endorphin (mu) receptors and prevents opioids from triggering their actions. Naloxone is a classic example used in overdose treatment due to its high affinity for these receptors and its ability to displace opioids. Benzodiazepines influence GABA receptors and do not block opioid receptors. Detoxifiers isn’t a standard pharmacology term for a receptor-blocking drug, and opioid agonists activate receptors and produce opioid effects rather than preventing them.

Blocking opioid effects happens when a drug acts as an antagonist at opioid receptors, occupying the receptor without activating it so that opioids cannot exert their effects. Narcotic antagonist best describes this mechanism, because it binds to endorphin (mu) receptors and prevents opioids from triggering their actions. Naloxone is a classic example used in overdose treatment due to its high affinity for these receptors and its ability to displace opioids. Benzodiazepines influence GABA receptors and do not block opioid receptors. Detoxifiers isn’t a standard pharmacology term for a receptor-blocking drug, and opioid agonists activate receptors and produce opioid effects rather than preventing them.