Atenolol is part of a class of drugs called beta blockers. It helps to block a specific type of beta receptor called beta-1 receptors. By blocking beta-1 receptors, the medication causes the reverse effect of adrenaline. It decreases heart rate, systolic and diastolic blood pressure, and the workload of the heart. This means that the heart requires less blood and oxygen to work properly.
The medication comes in tablet form and is typically taken once a day, with or without food. There are several different strengths available for atenolol, including:
(Click Atenolol for more information about atenolol uses, to learn more about how this medication works, and to find out what side effects may occur with treatment.)
Written by/reviewed by: Kristi Monson, PharmD;Arthur Schoenstadt, MD
Last reviewed by: KristiMonson, PharmD;
List of references (click here):
Tenormin [package insert]. Wilmington, DE: AstraZeneca Pharmaceuticals LP; 2008 April.
Food and Drug Administration, Center for Drug Evaluation and Research. Electronic orange book: approved drug products with therapeutic equivalence evaluations. FDA Web site. Available at: http://www.fda.gov/cder/ob/. Accessed December 29, 2008.
Briggs GG, Freeman RK, Yaffe SJ. Drugs in Pregnancy and Lactation. 8th ed. Philadelphia (PA): Lippincott Williams & Wilkins;2008.
National Library of Medicine (US). Drugs and Lactation Database (LactMED). NLM Web site. Available at: http://toxnet.nlm.nih.gov/cgi-bin/sis/htmlgen?LACT. Accessed December 29, 2008.
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