Final answer:
The correct opioid antagonists from the provided options are Nalmefene and Naloxone, which are used to reverse opioid intoxication and overdose. Lisinopril and Tricor are not opioid antagonists.
Step-by-step explanation:
The opioid antagonists that are asked about are drugs that are used to block the effects of opioids, such as morphine, heroin, and prescription pain relievers. Based on the options provided, the correct choices are:
Both Nalmefene and Naloxone are used to reverse the effects of opioid intoxication. Nalmefene is similar to Naloxone but has a longer duration of action. On the other hand, Naloxone can rapidly precipitate withdrawal in opioid-dependent individuals and is limited by its short duration of action and the necessity of parenteral administration. It is commonly used to reverse opioid overdose. Lisinopril is a medication used to treat high blood pressure and not an opioid antagonist. Similarly, Tricor (fenofibrate) is used to reduce cholesterol and triglycerides (fatty acids) in the blood, and it is also not an opioid antagonist.