MedPath

Atenolol

Generic Name
Atenolol
Brand Names
Tenoretic, Tenormin
Drug Type
Small Molecule
Chemical Formula
C14H22N2O3
CAS Number
29122-68-7
Unique Ingredient Identifier
50VV3VW0TI

Overview

Atenolol is a cardioselective beta-blocker used in a variety of cardiovascular conditions. Sir James Black, a Scottish pharmacologist, pioneered the use of beta-blockers for the management of angina pectoris in 1958 for which he received the Nobel Prize. Beta-blockers quickly became popular in clinical use and where subsequently investigated for use in myocardial infarction, arrhythmias, and hypertension during the 1960s. Later they continued to be investigated for use in heart failure throughout the 1970-1980s. Atenolol itself was developed early on in this history by Alvogen Malta under the trade name Tenormin and received FDA approval in September, 1981. Despite being one of the most widely prescribed beta blockers, evidence suggests atenolol may not significantly reduce mortality, and only modestly reduce the risk of cardiovascular disease in patients with hypertension. A Cochrane review of patients being treated for primary hypertension shows that atenolol shows a risk ratio of 0.88 for cardiovascular disease risk and a risk ratio of 0.99 for mortality. Similar results have been found in other meta-analyses. A meta-analysis of over 145,000 patients showed the risk of stroke in patients taking atenolol may depend on the age of the patient. The use of atenolol may need to be based on more patient factors than hypertension alone.

Background

Atenolol is a cardioselective beta-blocker used in a variety of cardiovascular conditions. Sir James Black, a Scottish pharmacologist, pioneered the use of beta-blockers for the management of angina pectoris in 1958 for which he received the Nobel Prize. Beta-blockers quickly became popular in clinical use and where subsequently investigated for use in myocardial infarction, arrhythmias, and hypertension during the 1960s. Later they continued to be investigated for use in heart failure throughout the 1970-1980s. Atenolol itself was developed early on in this history by Alvogen Malta under the trade name Tenormin and received FDA approval in September, 1981. Despite being one of the most widely prescribed beta blockers, evidence suggests atenolol may not significantly reduce mortality, and only modestly reduce the risk of cardiovascular disease in patients with hypertension. A Cochrane review of patients being treated for primary hypertension shows that atenolol shows a risk ratio of 0.88 for cardiovascular disease risk and a risk ratio of 0.99 for mortality. Similar results have been found in other meta-analyses. A meta-analysis of over 145,000 patients showed the risk of stroke in patients taking atenolol may depend on the age of the patient. The use of atenolol may need to be based on more patient factors than hypertension alone.

Indication

Indicated for: 1) Management of hypertension alone and in combination with other antihypertensives. 2) Management of angina pectoris associated with coronary atherosclerosis. 3) Management of acute myocardial infarction in hemodynamically stable patients with a heart rate greater than 50 beats per minutes and a systolic blood pressure above 100 mmHg. Off-label uses include: 1) Secondary prevention of myocardial infarction. 2) Management of heart failure. 3) Management of atrial fibrillation. 4) Management of supraventricular tachycardia. 5) Management of ventricular arrythmias such as congenital long-QT and arrhythmogenic right ventricular cardiomyopathy. 6) Management of symptomatic thyrotoxicosis in combination with methimazole. 7) Prophylaxis of migraine headaches. 8) Management of alcohol withdrawal.

Associated Conditions

  • Alcohol Withdrawal Syndrome
  • Angina Pectoris
  • Atrial Fibrillation
  • Heart Failure
  • Hypertension
  • Migraine
  • Myocardial Infarction
  • Refractory Hypertension
  • Secondary prevention Myocardial infarction
  • Supra-ventricular Tachyarrhythmias
  • Thyrotoxicosis
  • Ventricular Tachyarrhythmias

Clinical Trials

FDA Approved Products

Atenolol
Manufacturer:A-S Medication Solutions
Route:ORAL
Strength:50 mg in 1 1
Approved: 2016/06/30
NDC:50090-3043
Atenolol and Chlorthalidone
Manufacturer:Aidarex Pharmaceuticals LLC
Route:ORAL
Strength:50 mg in 1 1
Approved: 2013/11/22
NDC:33261-942
Atenolol
Manufacturer:NuCare Pharmaceuticals,Inc.
Route:ORAL
Strength:25 mg in 1 1
Approved: 2021/02/19
NDC:68071-5033
Atenolol
Manufacturer:Zydus Pharmaceuticals USA Inc.
Route:ORAL
Strength:50 mg in 1 1
Approved: 2024/01/11
NDC:68382-023
Atenolol
Manufacturer:Nivagen Pharmaceuticals, Inc.
Route:ORAL
Strength:50 mg in 1 1
Approved: 2024/02/08
NDC:75834-282

Singapore Approved Products

ATENOLOL TABLET 50 mg
Manufacturer:BEACONS PHARMACEUTICALS PTE. LTD.
Form:TABLET, FILM COATED
Strength:50 mg
Online:Yes
Approved: 1996/06/20
Approval:SIN08753P
PRENOLOL TABLET 100 mg
Manufacturer:BERLIN PHARMACEUTICAL INDUSTRY CO LTD
Form:TABLET, FILM COATED
Strength:100 mg
Online:Yes
Approved: 1998/10/14
Approval:SIN10278P
TENORMIN TABLET 25 mg
Manufacturer:ASTRAZENECA UK LTD
Form:TABLET, FILM COATED
Strength:25 mg
Online:Yes
Approved: 1996/04/19
Approval:SIN08669P
TENOL-100 TABLET 100mg
Manufacturer:SUNWARD PHARMACEUTICAL PRIVATE LIMITED
Form:TABLET, FILM COATED
Strength:100 mg
Online:Yes
Approved: 1994/03/10
Approval:SIN07662P
VASCOTEN 50 TABLET 50 mg
Manufacturer:MEDOCHEMIE LTD
Form:TABLET
Strength:50 mg
Online:Yes
Approved: 1992/10/08
Approval:SIN07161P

Drug Development Updates

Stay informed with timely notifications on clinical trials and research advancements.

© Copyright 2025. All Rights Reserved by MedPath