Which are therapeutic uses of verapamil? (Select all that apply)

Choice A reason: Bananas do not interact with acetaminophen. They are a potassium-rich food without impact on acetaminophen metabolism or hepatotoxicity. Acetaminophen’s primary risk is liver damage, especially with alcohol or overdose, making bananas irrelevant to its safe use, so this choice is incorrect.

Choice B reason: Leafy green foods, rich in vitamin K, may affect anticoagulants like warfarin but have no significant interaction with acetaminophen. They don’t influence acetaminophen’s metabolism or liver toxicity risk, making this choice irrelevant for patient instructions regarding safe acetaminophen use post-surgery.

Choice C reason: Alcohol increases acetaminophen’s hepatotoxicity by inducing CYP2E1 enzymes, which metabolize acetaminophen into toxic NAPQI, depleting liver glutathione and causing damage. Avoiding alcohol prevents severe liver injury, especially post-surgery when liver function is critical, making this the correct choice for patient safety.

Choice D reason: Dairy products do not interact with acetaminophen’s metabolism or toxicity. They may slow gastric emptying, slightly delaying absorption, but this isn’t a significant concern. Acetaminophen’s primary risk is hepatotoxicity, unaffected by dairy, making this choice incorrect for discharge instructions.

Choice A reason: Opioid tolerance does not reduce constipation; it may persist or worsen. Tolerance primarily reduces pain relief, so this is incorrect for the effect.

Choice B reason: Respiratory depression risk may not increase with tolerance, as sensitivity to this effect also diminishes. Analgesia is most affected, so this is incorrect.

Choice C reason: Euphoria typically decreases with tolerance, not increases, as receptor sensitivity drops. Reduced analgesia is the primary effect, so this is incorrect.

Choice D reason: Opioid tolerance leads to decreased analgesic effect, requiring higher doses for pain relief. This is the hallmark of tolerance, making it the correct choice.