Amlodipine is a calcium antagonist with antihypertensive and anti-anginal effects. It is mainly used for the treatment of hypertension and angina pectoris, and also for the treatment of coronary artery disease, but only for patients with coronary artery disease not associated with heart failure, and patients with severe hypotension and severe aortic stenosis should not use this drug. If you get up quickly while taking amlodipine, it may cause dizziness or fainting. Be sure to get up slowly, and be careful when climbing stairs, as this reaction may occur. Amlodipine may also cause side effects like dizziness, flushing, lower limb edema, fatigue, palpitations, abdominal pain, and drowsiness, which are usually mild and can be relieved with use for a period of time, and may result in hypotension or rapid heartbeat in severe overdose.