When Taking the Depressed Patient's History, the Nurse Finds That

When taking the depressed patient's history, the nurse finds that the patient is taking Prozac and the herbal remedy St. John's wort. The nurse gives this information to the physician immediately because:

A) the patient is still depressed and needs another antidepressant added.
B) Prozac and St. John's wort should not be taken together, because this can cause toxicity.
C) Prozac and St. John's wort are complementary therapies and the doctor should know this.
D) the patient should not be taking herbal remedies, because they have proven to be ineffective.