The combination of morphine or heroin with naloxone or naltrexone is an example of __________.

Question

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The combination of morphine or heroin with naloxone or naltrexone is an example of an antagonistic effect. Naloxone and naltrexone are opioid antagonists that block the effects of opioids by binding to the same receptors in the brain. When naloxone or naltrexone is combined with opioids such as morphine or heroin, it prevents the opioids from binding to the receptors, thereby reversing their effects. This is commonly used in opioid overdose treatment to quickly reverse the harmful effects of opioids.

The Combination of Morphine or Heroin with Naloxone or Naltrexone