A Client Who Was Diagnosed with Clostridium Difficile Calls the Clinic

A client who was diagnosed with Clostridium difficile calls the clinic and says, "I'm still having diarrhea so I started taking an over-the-counter medication to stop it." How should the nurse respond?

A) "Which antidiarrheal are you taking?"
B) "How many doses have you taken?"
C) "Stop taking the medicine and come to the clinic."
D) "Is it stopping your diarrhea?"