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Atenolol (Atenolol) - Summary



Cessation of Therapy with Atenolol

Patients with coronary artery disease, who are being treated with atenolol, should be advised against abrupt discontinuation of therapy. Severe exacerbation of angina and the occurrence of myocardial infarction and ventricular arrhythmias have been reported in angina patients following the abrupt discontinuation of therapy with beta-blockers. The last two complications may occur with or without preceding exacerbation of the angina pectoris. As with other beta-blockers, when discontinuation of atenolol is planned, the patients should be carefully observed and advised to limit physical activity to a minimum. If the angina worsens or acute coronary insufficiency develops, it is recommended that atenolol be promptly reinstituted, at least temporarily. Because coronary artery disease is common and may be unrecognized, it may be prudent not to discontinue atenolol therapy abruptly even in patients treated only for hypertension (see DOSAGE AND ADMINISTRATION).



Atenolol, a synthetic, beta1-selective (cardioselective) adrenoreceptor blocking agent.


Atenolol tablets, USP are indicated in the management of hypertension. It may be used alone or concomitantly with other antihypertensive agents, particularly with a thiazide-type diuretic.

Angina Pectoris Due to Coronary Atherosclerosis

Atenolol tablets, USP are indicated for the long-term management of patients with angina pectoris.

Acute Myocardial Infarction

Atenolol tablets, USP are indicated in the management of hemodynamically stable patients with definite or suspected acute myocardial infarction to reduce cardiovascular mortality. Treatment can be initiated as soon as the patientÂ’s clinical condition allows (see DOSAGE AND ADMINISTRATION, CONTRAINDICATIONS, and WARNINGS). In general, there is no basis for treating patients like those who were excluded from the ISIS-1 trial (blood pressure less than 100 mm Hg systolic, heart rate less than 50 bpm) or have other reasons to avoid beta-blockade. As noted above, some subgroups (e.g., elderly patients with systolic blood pressure below 120 mm Hg) seemed less likely to benefit.

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Published Studies Related to Atenolol

Identifying iatrogenic depression using confirmatory factor analysis of the Center for Epidemiologic Studies Depression Scale in patients prescribed a verapamil-sustained-release-led or atenolol-led hypertension treatment strategy. [2011.11.29]
BACKGROUND: beta-blockers and calcium channel blockers are highly effective medications indicated for treatment and prevention of hypertension. However, the literature regarding the potential depressive effects of beta-blockers and calcium channel blockers is equivocal regarding whether one or both are associated with depression. OBJECTIVES: To determine whether self-reported depressive symptoms of older persons with hypertension and coronary artery disease and who were randomly assigned to a verapamil-sustained-release-led (Ve-led) or atenolol-led (At-led) hypertension treatment strategy were similar using confirmatory factor analytical models of the Center for Epidemiologic Studies Depression Scale (CES-D)... CONCLUSIONS: The domains indicating less happiness and more depressive symptoms were most likely to be unfavorably impacted by the At-led treatment strategy. Given a choice between these equally effective high blood pressure treatment strategies, it may be prudent to use the Ve-led strategy. This is especially true if the risk of the occurrence of a mood-related side effect of the beta-blocker outweighs its other benefits in comparison. Copyright (c) 2011 Elsevier Inc. All rights reserved.

[Study of the efficacy and safety of losartan versus atenolol for aortic dilation in patients with Marfan syndrome]. [2011.06]
INTRODUCTION AND OBJECTIVES: Marfan syndrome is an inherited disease of the connective tissue. Recent trials have indicated the use of losartan (a transforming growth factor beta inhibitor) in these patients prevents aortic root enlargement. The aim of our clinical trial is to assess the efficacy and safety of losartan versus atenolol in the prevention of progressive dilation of the aorta in patients with Marfan syndrome... CONCLUSIONS: Efficacy of losartan versus atenolol in the prevention of progressive dilation of the aorta, improved aortic distensibility, and prevention of adverse events (aortic dissection or rupture, cardiovascular surgery, or death) will be assessed in this study. It will also show the possible treatment benefits at different age ranges and with relation to the initial level of aortic root dilation. Copyright (c) 2011 Sociedad Espanola de Cardiologia. Published by Elsevier Espana. All rights reserved.

Comparison of the effects of ivabradine and atenolol on heart rate and echocardiographic variables of left heart function in healthy cats. [2011.05]
BACKGROUND: Ivabradine is a novel negative chronotropic drug used for treatment of ischemic heart disease in people. Little is known about its effects and safety in cats.Clinical studies in cats with hypertrophic cardiomyopathy are needed to validate these findings.

Effect of atenolol vs metoprolol succinate on vascular function in patients with hypertension. [2011.01]
BACKGROUND: We evaluated the effect of atenolol vs metoprolol succinate on vascular function in patients with essential hypertension. HYPOTHESIS: Given intrinsic differences between these agents, we hypothesized that atenolol and metoprolol succinate would have disparate effects on vascular function... CONCLUSIONS: Although atenolol and metoprolol succinate have similar effects on blood-pressure reduction, they have different effects on vascular function. Compared with metoprolol succinate, atenolol increases peripheral AIx. Neither drug has an effect on vascular endothelial function. These findings may have clinical implications, depending on the indication for treatment in an individual patient. (c) 2011 Wiley Periodicals, Inc.

beta(1)-Adrenergic receptor gene polymorphisms and the acute response to atenolol in healthy young Japanese subjects. [2011]
Polymorphisms at codons 49 and 389 of the beta(1)-adrenergic receptor gene have been shown to alter the receptor function in vitro, whereas it remains controversial whether they influence the response to beta-blocker in vivo. In the present study, we investigated whether these polymorphisms influence the acute changes of heart rate and blood pressure induced by the beta(1)-adrenergic receptor-selective blocker atenolol in healthy young Japanese...

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Clinical Trials Related to Atenolol

Effects of Losartan Versus Atenolol on Aortic and Cardiac Muscle Stiffness in Adults With Marfan Syndrome [Completed]
Marfan syndrome is an inherited connective tissue disorder with morbidity and mortality from aortic dilation and dissection. The degree of aortic dilation and response to beta-blockade (standard of care) vary in adults with Marfan syndrome. However, aortic stiffness is often present, and can be a predictor of aortic dilation and cardiovascular complications. In addition, adults with Marfan syndrome develop left ventricular diastolic dysfunction, which can progress to heart failure. Aortic stiffness and diastolic dysfunction are important and logical therapeutic targets in adults with Marfan syndrome. TGF-beta mediates disease pathogenesis in Marfan syndrome and contributes to aortic stiffness. The angiotensin receptor blocker, losartan, inhibits TGF-beta activity and reverses aortic wall pathology in a Marfan mouse model. Losartan also decreases aortic stiffness and improves diastolic function in hypertension, renal disease and hypertrophic cardiomyopathy. This trial is a randomized, double-blind trial of 50 adults with Marfan syndrome, treated with 6 months of atenolol vs. losartan. Arterial tonometry for aortic stiffness and echocardiography for diastolic function will be performed at the beginning and end of treatment. A blood draw for serum markers of extracellular matrix turnover and inflammation will also be performed at 0 and 6 months. We plan to determine whether losartan decreases aortic stiffness and left ventricular diastolic dysfunction significantly more than atenolol.

Effect of SLCO2B1 Genotype and Apple Juice on Pharmacokinetics of Atenolol After Oral Administration in Healthy Male Korean [Completed]

Atenolol Versus Losartan in the Prevention of Progressive Dilation of the Aorta in Marfan Syndrome [Active, not recruiting]
The purpose of this study is to evaluate the efficacy of Losartan versus Atenolol in the progression of aortic dilatation in patients with Marfan syndrome.

Study to Assess Efficacy of Nicorandil+Atenolol vs Atenolol in Treatment of Chronic Stable Angina. [Recruiting]

Safety and Efficacy of Valsartan vs Atenolol and Hydrochlorothiazide Combination on Blood Flow in Hypertensive Patients [Completed]
This study evaluated the effect of valsartan on small vessel blood flow in patients with mild-to-moderate hypertension in direct comparison to atenolol and hydrochlorothiazide.

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Reports of Suspected Atenolol Side Effects

Completed Suicide (151)Hypertension (76)Bradycardia (70)Toxicity TO Various Agents (65)Blood Pressure Increased (62)Drug Ineffective (51)Hypotension (48)Cardiac Arrest (46)Renal Failure Acute (44)Dizziness (42)more >>


Based on a total of 12 ratings/reviews, Atenolol has an overall score of 8. The effectiveness score is 8 and the side effect score is 7.83. The scores are on ten point scale: 10 - best, 1 - worst. Below are selected reviews: the highest, the median and the lowest rated.

Atenolol review by 60 year old female patient

Overall rating:  
Effectiveness:   Highly Effective
Side effects:   No Side Effects
Treatment Info
Condition / reason:   Extra Heartbeat
Dosage & duration:   25 mg/day taken 1 /day for the period of 13+ years
Other conditions:   None
Other drugs taken:   None
Reported Results
Benefits:   The benefits are amazing. I felt dizzy and like I was going to faint before I took the drug. These symptoms went away and have stayed away for going on 20 years. I also have seen that it helps with blood pressure and pulse rate.
Side effects:   I have never experienced any adverse side affects.
Comments:   I simply take one tiny tablet each morning.


Atenolol review by 67 year old female patient

Overall rating:  
Effectiveness:   Moderately Effective
Side effects:   Mild Side Effects
Treatment Info
Condition / reason:   hypertension
Dosage & duration:   25 mg taken 1 po qd for the period of 3 years
Other conditions:   none
Other drugs taken:   none
Reported Results
Benefits:   Effective in reducing hypertension from previous approximately 170/85 to less than 150/65 and now even less at approximately 130/65
Side effects:   Side effected included sleepiness, and unaccountably nausea while sailing. Prior to taking this drug I had never had problems with "seasickness" while sailing. I found I had to stay topside during sailing times. Other than that, the tiredness was a factor which became less noticeable with time. The seasickness would not be a problem for the majority of people, I am sure
Comments:   Treatment was 1 pill per day for approximately 3 years (25 mg) which I am told is a quite low dose for this medication. However my weight is 100 lbs on average and small build so for me it was more than enough. It helped my hypertension come back to within normal range which I was pleased with. If I needed to go back on an antihypertensive, I would try it again


Atenolol review by 62 year old male patient

Overall rating:  
Effectiveness:   Ineffective
Side effects:   Severe Side Effects
Treatment Info
Condition / reason:   Atrial Fibrillation
Dosage & duration:   25 mg taken daily for the period of 3 months
Other conditions:   mild hypertension
Other drugs taken:   warafin, lisinopril
Reported Results
Benefits:   none except....slowed heart rate. My afib was NOT diminished, but I assume the drug was helping keep my heart rate when in Afib down somewhat
Side effects:   The 3 months i was on atenolol (25mg) I had vertigo, short term memory loss, anxiety, and hearing issue. All except hearing went away when I switched to a different beta blocker. Joe Hare
Comments:   once a day 25 mg

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Page last updated: 2011-12-09

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