Taking a beta-blocker antihypertensive medication such as atenolol can lower your heart rate. Atenolol is commonly used in the treatment of hypertension, angina pectoris, myocardial infarction, arrhythmias, hyperthyroidism, and pheochromocytoma. Contraindications are patients with bronchial asthma, patients with cardiogenic shock, patients with II to III degree atrioventricular block, patients with severe heart failure, patients with sinus bradycardia, and pregnant women. Adverse reactions are cold extremities, fatigue, gastrointestinal discomfort, bradycardia may occur. Rarely sleep disturbances, depression, alopecia, thrombocytopenia, purpura, psoriasiform skin reactions, worsening of psoriasis, blurred vision, hallucinations, or upright hypotension. Drugs need to be used under the supervision of a doctor to avoid private medication, and it is recommended that patients with high blood pressure with abnormal heart rate should visit a hospital and be treated according to the doctor’s instructions.