The Nurse Is Teaching a Client Who Is Being Discharged

The nurse is teaching a client who is being discharged from the hospital.The client will be going home on morphine sulfate therapy.The client tells the nurse that at home, the client was using Saint John's wort as a natural treatment for depression, and asks the nurse if it is OK to continue taking this herb.The best response from the nurse is:

A) "Why are you using an herb? You could treat you depression better with conventional medication."
B) "Saint John's wort can decrease the analgesic effect of morphine sulfate; you might want to wait until you no longer need the pain management."
C) "If it is a natural substance, it should be OK, and you should not have to worry about any drug interactions."
D) "As long as you don't take them at the same time, you should be OK; just space taking them about two hours apart."