Instructed patient that the most commonly reported side effects of Amlodipine (which is used to treat HTN) include: headache, edema, rash, fatigue, and dizziness. Check with MD or HH nurse if any of the following side effects continue or are bothersome: acid or sour stomach, belching, heartburn, indigestion, lack or loss of strength, muscle cramps, sleepiness or unusual drowsiness, and stomach discomfort, upset, or pain.