Nifedipine controlled-release tablets can not be used to treat arrhythmia, may lead to increased heart rate. The main ingredient of nifedipine controlled-release tablets is nifedipine, which is a calcium channel blocker and has the effect of lowering blood pressure, and after the blood vessels are dilated, the body will cause the heart rate to increase through some reflexes. Clinically, it is mainly used for the treatment of hypertension, coronary heart disease and other diseases, short-acting nifedipine can play a certain role in relieving angina. Arrhythmia can be called cardiac arrhythmia, the patient will feel obvious heartbeat as well as panic, there will be symptoms such as heartbeat speeding up, slowing down or irregular heartbeat. Sodium channel blockers such as metoprolol or bisoprolol fumarate are available for relief, as well as potassium channel blockers such as amiodarone. Nifedipine controlled release tablets are not suitable for people with allergies, and should be used with caution in pregnancy as well as in lactating women. Nifedipine controlled release tablets should not be taken for arrhythmia, which may lead to adverse effects, and should be used under the guidance of a doctor’s advice.