Felodipine extended-release tablets are used to treat high blood pressure and stable angina. Felodipine extended-release tablets are a calcium channel blocking drug whose active ingredient is felodipine. It can be used to treat high blood pressure and stable angina. It can cause mild to moderate ankle edema, facial flushing, headache, palpitations (rapid heartbeat, often accompanied by panic), dizziness, hyperglycemia and other adverse reactions. Felodipine extended-release tablets are contraindicated in decompensated heart failure, acute myocardial infarction, pregnant women, patients with unstable angina pectoris, and those with hypersensitivity to felodipine. Use with caution in aortic stenosis, hepatic impairment, severe renal impairment, heart failure after acute myocardial infarction. It is recommended to use felodipine extended-release tablets under the guidance of a doctor, not blindly self-medication to avoid adverse consequences.