Arolol usually refers to Arolol Hydrochloride tablets, which are effective in lowering blood pressure, anti-angina, anti-arrhythmia, and anti-fibrillation. Side effects include heart failure, conduction block, and bradycardia. Arolol Hydrochloride Tablets can block α and β receptors, with the effect of antihypertensive, anti-angina, anti-arrhythmia and anti-tremor. The use of the drug may cause side effects such as heart failure, atrioventricular block, sinus block, sick sinus syndrome, bradycardia, hypotension, dizziness, chest pain, liver damage. Arolol Hydrochloride Tablets are contraindicated in people who are allergic to the product, severe bradycardia, conduction block, diabetic ketosis, metabolic acidosis, bronchial asthma, cardiogenic shock, heart failure, pregnant and lactating women. The use of medication should be in accordance with the instructions of the physician, if any adverse reactions occur after the use of medication should be discontinued in time and seek medical attention.