A nurse is teaching a client who has a new prescription for hydrochlorothiazide for management of hypertension. Which of the following instructions should the nurse include?

A. "Monitor for leg cramps.": Hydrochlorothiazide is a thiazide diuretic, and one of its common side effects is hypokalemia which can lead to muscle cramps, including leg cramps. Clients should be instructed to monitor for muscle cramps and notify the healthcare provider if they occur. B. "Avoid grapefruit juice.": Grapefruit juice is typically associated with interactions with certain medications, such as calcium channel blockers or statins, but it does not have a significant interaction with hydrochlorothiazide. C. "Reduce intake of potassium-rich foods.": Hydrochlorothiazide can cause the loss of potassium through urine, so clients are generally advised to increase their intake of potassium-rich foods (such as bananas, oranges, and spinach) to help counteract potential potassium loss. D. "Take this medication before bedtime.": Thiazide diuretics like hydrochlorothiazide are usually taken in the morning to avoid nocturia, which can disrupt sleep. Taking it before bedtime is not recommended.