A client diagnosed with trichomoniasis is prescribed metronidazole. The nurse should instruct the client to avoid which contraindication associated with this medication?

A. Alcohol consumption: Metronidazole has a disulfiram-like reaction with alcohol, which can cause severe nausea, vomiting, flushing, and tachycardia. Clients should avoid alcohol during and for at least 48 hours after the completion of metronidazole therapy. B. Tyramine-based foods: Avoiding tyramine-rich foods is important with certain MAOIs due to the risk of hypertensive crisis, not with metronidazole. C. Apple Juice: There is no significant interaction between metronidazole and apple juice. D. Soy beans: Soybeans do not have an interaction with metronidazole.