A nurse is providing teaching to a client who has hypertension and a new prescription for captopril. Which of the following instructions should the nurse provide?

A. Salt substitutes often contain potassium, and captopril, an ACE inhibitor, can increase potassium levels in the body. Using salt substitutes could lead to hyperkalemia, which can be dangerous. B. Captopril can be taken with or without food. However, it is generally recommended to take it on an empty stomach for better absorption. C. While it is important to monitor for hypotension, counting the pulse rate is not typically necessary with captopril. The primary focus should be on blood pressure. D. Weight gain is not a common side effect of captopril. If a client experiences unexplained weight gain, it should be reported as it could indicate fluid retention or heart failure.