Atenolol tablets belong to beta-blockers, which have the effect of lowering blood pressure and reducing myocardial oxygen consumption. Atenolol tablets are indicated for hypertension, myocardial infarction, angina pectoris, and can also be used for the treatment of cardiac arrhythmias, pheochromocytoma, and hyperthyroidism. Any drug has certain adverse effects, and the adverse effects of atenolol tablets include hypotension, bradycardia, dizziness, and gastrointestinal discomfort. It should be noted that atenolol tablets should be used with caution in people with cardiogenic shock, sick sinus syndrome and severe sinus bradycardia. For people who need to use Atenolol tablets, it is recommended to consult a doctor in a regular hospital and use the medication under the doctor’s guidance to avoid drug abuse.