Final answer:
The medication that reverses the effects of opioids and may restore normal breathing is Naloxone. It antagonizes opioid receptors, reversing respiratory depression caused by an overdose but must be followed by emergency medical treatment due to its short-lasting effects.
Step-by-step explanation:
The medication that can reverse the effects of opioids and may restore normal breathing is Naloxone (Option A). Opioids such as morphine, oxycodone, and fentanyl can lead to respiratory depression, which significantly reduces the ability to breathe and is the primary cause of death in opioid overdose cases. Naloxone works as an opiate antagonist, rapidly blocking the effects of opioids at their receptors. This is essential in emergency situations as it can quickly restore normal breathing in an individual who has overdosed on opioids. It does not produce analgesia or euphoria and does not cause respiratory depression in normal individuals. However, it can precipitate withdrawal in those who are dependent on narcotics. Since Naloxone has a short duration of action and needs to be administered parenterally, it is crucial to seek emergency medical treatment even after its administration.