Atenolol 25 mg Tablets — Generic For Tenormin — Unichem

Medication Summary

Medication Summary: This section summarizes DailyMed drug label information to make the label easier to understand. It is not a substitute for the official label, pharmacist counseling, prescriber instructions, or medical advice.

Overview

Atenolol tablets are a beta1-selective beta-blocker available by prescription. The label says the 25 mg tablet is one of several oral strengths, and it contains inactive ingredients such as colloidal silicon dioxide, magnesium stearate, microcrystalline cellulose, povidone, and sodium starch glycolate.

This medicine is indicated for treatment of high blood pressure, long-term management of angina pectoris due to coronary atherosclerosis, and management of hemodynamically stable patients with definite or suspected acute myocardial infarction to reduce cardiovascular mortality.

The label warns that atenolol should not be stopped suddenly, especially in patients with coronary artery disease, because abrupt discontinuation has been associated with worsening angina and other serious heart problems. It also notes important cautions for heart failure, bronchospastic disease, diabetes or fasting states, pregnancy, breastfeeding, kidney problems, and use with certain other medicines.

Storage Information

Store at 20  to 25 C (68  to 77 F) [see USP Controlled Room Temperature].

Key Counseling Points

• Atenolol is used to treat high blood pressure, angina, and certain patients with acute myocardial infarction.
• Do not stop atenolol suddenly; abrupt discontinuation can worsen angina and has been linked to serious heart problems.
• Tell a healthcare professional if there is a history of heart block, slow heart rate, heart failure, or cardiogenic shock.
• Use caution if there is bronchospastic disease; the label says beta-blockers are generally not recommended in these patients.
• Atenolol may mask warning signs of low blood sugar, such as rapid heartbeat.
• The label warns of increased risk of severe or prolonged hypoglycemia in people who are fasting, vomiting, have diabetes, or are children.
• Tell a healthcare professional about all medicines being taken, including calcium channel blockers, clonidine, disopyramide, amiodarone, digitalis glycosides, and catecholamine-depleting drugs.
• Use caution in pregnancy and breastfeeding; the label warns of fetal harm and reports risk of bradycardia and hypoglycemia in exposed infants.
• Kidney function is important because atenolol is eliminated mainly by the kidneys and may accumulate when renal function is impaired.
• In older adults, dose selection should be cautious because clearance may be lower.

Helpful Patient Education

Atenolol tablets are a prescription beta-blocker used for hypertension, angina pectoris due to coronary atherosclerosis, and for reducing cardiovascular mortality in hemodynamically stable patients with definite or suspected acute myocardial infarction. The label describes atenolol as a beta1-selective (cardioselective) adrenoreceptor blocking agent.

This product contains atenolol as the active ingredient and is available in oral tablet strengths including 25 mg, 50 mg, and 100 mg. Educational labeling information highlights important safety considerations, including the need to avoid abrupt discontinuation and to use caution in patients with heart failure, bronchospastic disease, kidney impairment, pregnancy, or breastfeeding.

Medication Summary last generated: 2026-07-17 02:48:22