Compensated heart failure. Variant angina, acute MI, DM; peripheral vascular disorders; hepatic and renal dysfunction; elderly patients, children. Lactation. If atenolol and clonidine are co-admin, then gradual withdrawal of clonidine should take place a few days after withdrawal of atenolol.
Lactation: Drug enters breast milk; neonates born to mothers who are receiving atenolol at parturition or breastfeeding may be at risk for hypoglycemia and bradycardia; use with caution
There is positive evidence of human fetal risk based on adverse reaction data from investigational or marketing experience or studies in humans, but potential benefits may warrant use of the drug in pregnant women despite potential risks.
Mode of Action
Atenolol is a competitive cardioselective beta1-blocker and does not have effect on ?beta2-receptors except in high doses. It reduces resting and exercise-induced heart rate as well as myocardial contractility.
Interaction
Concomitant admin w/ reserpine may increase hypotension and bradycardia. Additive w/ Ca channel blockers, hydralazine, methyldopa. Increased risk of bradycardia and heart block w/ verapamil and diltiazem. May decrease hypotensive effects w/ NSAIDs (e.g. indometacin). Enhanced bradycardic effect w/ disopyramide, amiodarone or digitalis glycosides. May exacerbate rebound HTN upon discontinuance of clonidine treatment.
Pregnancy Category Note
Pregnancy category: D
Lactation: Drug enters breast milk; neonates born to mothers who are receiving atenolol at parturition or breastfeeding may be at risk for hypoglycemia and bradycardia; use with caution
Adult Dose
Adult
Hypertension
25-50 mg/day PO initially; may be increased to 100 mg/day PO
Angina Pectoris
50 mg/day PO; after 1 week, may be increased to 100 mg/day PO; some patients may require 200 mg/day
Post Myocardial Infarction
Secondary prevention
100 mg PO once daily or divided q12hr for 6-9 days after myocardial infarction (MI)
Elderly
May be necessary to initiate dosing at 25 mg/day PO
Hypertension
25 mg/day PO initially; may be increased to 100 mg/day PO
Angina Pectoris
25 mg/day PO; after 1 week, may be increased to 100 mg/day; some patients may require 200 mg/day
Post Myocardial Infarction
Secondary prevention
100 mg PO once daily or divided q12hr for 6-9 days after MI
Child Dose
N/A
Renal Dose
Renal impairment:
CrCl (ml/min)
<15 25 mg or 50 mg on alternate days.
15-35 50 mg/day.
Dialysis patients 25-50 mg after each dialysis.
Administration
May be taken with or without food.
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The information provided herein are for informational purposes only and not intended to be a substitute for professional medical advice, diagnosis, or treatment. Please note that this information should not be treated as a replacement for physical medical consultation or advice. Great effort has been placed to provide accurate and comprehensive data. However, Medicart along with its authors and editors make no representations or warranties and specifically disclaim all liability for any medical information provided on the site. The absence of any information and/or warning to any drug shall not be considered and assumed as an implied assurance of the Company.