A 47-year-old hypertensive man has been treated with amlodipine 10 mg/day orally, for chronic stable angina pectoris and hypertension. He complains of ankle edema that worsened after her dose of amlodipine was recently increased. Are diuretics indicated? Ankle edema is a common side effect of dihydropyridine calcium channel blockers, occurring in 7-20% of patients treated. [...]