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Author: Admin | 2025-04-28
Uses What Is Atenolol and How Does It Work? Dosage What Are Dosages of Atenolol? Side Effects What Are Side Effects Associated with Using Atenolol? Drug Interactions What Other Drugs Interact with Atenolol? Warnings and Precautions What Are Warnings and Precautions for Atenolol? What Is Atenolol and How Does It Work?Atenolol is used with or without other medications to treat high blood pressure (hypertension). Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. This medication is also used to treat chest pain (angina) and to improve survival after a heart attack. Atenolol belongs to a class of drugs known as beta-blockers. It works by blocking the action of certain natural chemicals in your body, such as epinephrine, on the heart and blood vessels. This effect lowers the heart rate, blood pressure, and strain on the heart. Atenolol may also be used to treat irregular heartbeat, heart failure, alcohol withdrawal symptoms, and to prevent migraine headaches. Atenolol is available under the following different brand names: Tenormin.What Are Dosages of Atenolol?Dosages of AtenololAdult and Pediatric Dosage Forms and StrengthsTablet 25 mg 50 mg 100 mgDosage Considerations – Should be Given as Follows: Hypertension Adult: 25-50 mg/day orally initially; may be increased to 100 mg/day orally Pediatric (Off-label): 0.5-1 mg/kg/day orally; not to exceed 2 mg/kg/day or 100 mg/day Geriatric: 25 mg/day orally initially; may be increased to 100 mg/day orallyAngina Pectoris Adult: 50 mg/day orally; after 1 week, may be increased to 100 mg/day orally; some patients may require 200 mg/day Geriatric: 25 mg/day orally; after 1 week, may be increased to 100 mg/day; some patients may require 200 mg/dayPost Myocardial Infarction (MI)Secondary prevention Adult: 100 mg orally once daily or divided every 12 hours for 6-9 days after myocardial infarction (MI) Geriatric: 100 mg orally once daily or divided every 12 hours for 6-9 days after MIAlcohol Withdrawal Syndrome (Off-label) 50-100 mg/day orallySupraventricular Arrhythmias (Off-label) Prevention 50 mg/day orally, beginning up to 3 days before surgery and continued until 7 days after surgery; may be increased to 100 mg/dayThyrotoxicosis (Off-label) 25-100 mg orally once daily or divided every 12 hoursDosing Modifications CrCl 15-35 mL/min/1.73 m²: Not to exceed 50 mg/day orally CrCl less than 15 mL/min/1.73 m²: Not to exceed 25 mg/day orally CrCl greater than 35 mL/min/1.73 m²: Dose adjustment not necessaryDosing Considerations Geriatric: It may be necessary to initiate dosing at 25 mg/day orally What Are Side Effects Associated with Using Atenolol?Side effects of atenolol include: Tiredness Low blood pressure (hypotension) Slow heart rate Cold extremities Dizziness upon standing Depression Nausea Dreaming Drowsiness Diarrhea Fatigue Leg pain Lethargy Lightheadedness Spinning sensation (vertigo) Shortness of breath 2°/3° atrioventricular (AV) blockOther side effects of atenolol include: Severe congestive
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