Arolol Hydrochloride Tablets is not a hormone, it is a beta-blocker. It is mainly used to inhibit hyperactive cardiac function and reduce myocardial oxygen consumption through beta-blockade, and is clinically used in the treatment of mild to moderate essential hypertension, tachyarrhythmia, angina pectoris and essential tremor. ADVERSE REACTIONS: Adverse reactions such as malaise, headache, diarrhea, chest pain, hypotension, bradycardia, and heart failure may occur. Contraindications: The drug is contraindicated in patients who are allergic to the components of the drug, those with significant bradycardia, right heart failure due to pulmonary hypertension, cardiogenic shock, pregnant and lactating women. Precautions: the drug is used with caution in patients with idiopathic hypoglycemia, insufficiently controlled diabetes mellitus, patients in a state of fasting for a long period of time, hypotension, bradycardia, atrioventricular block. The drug should be used under the guidance of a physician, not blindly used by yourself to avoid adverse effects.