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Treatment of hypertension (high blood pressure), angina pectoris (chest pain), control of heart rate in certain tachyarrhythmias; may be used post-myocardial infarction as advised by physician.

Atenolol is a cardioselective beta-1 adrenergic blocker. It reduces heart rate and the force of contraction, lowering cardiac workload and oxygen demand, and decreases blood pressure by reducing cardiac output and suppressing renin release.

Take by mouth as prescribed, usually once daily at the same time each day. Can be taken with or without food. Swallow tablet with water; do not stop suddenly without medical advice.

bradycardia, fatigue, dizziness, cold extremities, nausea, diarrhea, sleep disturbances

Do not stop abruptly (may worsen angina/trigger heart events). Use with caution in asthma/COPD (may cause bronchospasm), diabetes (can mask hypoglycemia symptoms), thyroid disorders, peripheral vascular disease, and in elderly. Contraindicated/avoid in severe bradycardia, heart block (2nd/3rd degree), cardiogenic shock, and decompensated heart failure unless directed by doctor. Monitor blood pressure and pulse regularly.

Other antihypertensives (additive BP lowering), calcium channel blockers like verapamil/diltiazem (risk of bradycardia/heart block), digoxin (bradycardia), antiarrhythmics like amiodarone (conduction disturbances), clonidine (rebound hypertension on withdrawal), NSAIDs (may reduce antihypertensive effect), insulin/oral antidiabetics (masked hypoglycemia), anesthetic agents (enhanced hypotension/bradycardia).

Store below 25°C in a cool, dry place. Protect from moisture and direct light. Keep out of reach of children.

Tenormin 25 Tablet, Aten 25 Tablet, Atenolol 25 mg Tablet (generic), Betacard 25 Tablet, Atenova 25 Tablet