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Atenolol
Atenolol is a medication that belongs to a class of drugs known as beta-blockers. It's used to treat high blood pressure (hypertension) and prevent chest pain (angina). It can also improve survival rates after heart attacks. By lowering blood pressure, atenolol helps reduce the chance of strokes, heart attacks, and kidney problems.
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Frequently Asked Questions
Can I take Atenolol if I have asthma?
A word of caution—Atenolol can worsen asthma symptoms. Discuss this with your healthcare provider before starting this medication.
Does Atenolol cause weight gain?
In rare cases, Atenolol can cause weight gain. If this occurs, consult with your doctor to review your treatment plan.
What happens if I miss a dose?
Take the missed dose as soon as you remember. If it's close to the time for the next dose, skip the missed dose.
Can I stop Atenolol cold turkey?
No, don't do it! Abruptly stopping Atenolol can cause concerning heart-related symptoms. It’s important to consult with your healthcare provider who can help you discontinue it safely.
Does Atenolol slow down the heart rate?
Yes, it does. Keeping track of your heart rate while on Atenolol is important. If it becomes too slow, consult with your doctor immediately.
Can I drink alcohol while on Atenolol?
It's advised to avoid or limit alcohol while taking Atenolol as it can enhance the blood pressure-lowering effects of this medication and may cause side effects like dizziness or lightheadedness. Always consult with your doctor or pharmacist for more specific advice.
Comprehensive Drug Guide
How Does Atenolol Work?
Atenolol is a cardioselective beta-1 receptor antagonist. It blocks response to beta-adrenaline's impact/stimulation on these receptors, thereby reducing heart rate, blood pressure, and strain on the heart. Atenolol has little to no effect on beta2 receptors.
What is Atenolol Used For?
Atenolol is used to treat hypertension, angina, and to improve survival rate after a heart attack.
Common Dosages
Tablets: 25mg, 50mg, 100mg
Typical Dosing
FDA Approved Indications
- For Hypertension: 25 to 50 mg initially and then may be increased to 100 mg per day, either in a single dose or divided into two doses.
- For Angina: Initial dose 50 mg; 1 week later may be increased to 100 mg to 200 mg per day dependent on patient need.
- For Post-Myocardial Infarction (After Heart Attack) Secondary prevention: 100 mg per day. Or 50 mg twice daily for 6-9 days
Off-Label Uses
Pediatric Dosing
- Pediatric dosing of Atenolol varies based on the condition being treated and the child's weight. Always follow the doctor's instructions.
- Be aware that lower doses might be required for children.
- As with adults, children should not stop taking Atenolol abruptly to avoid withdrawal symptoms.
Who Shouldn't Take Atenolol?
- Those with a serious heart condition such as heart block, sick sinus syndrome, or slow heart rate.
- People with low blood pressure or who are allergic to atenolol.
- Those with severe circulation problems like "Raynaud's disease" or chronic heart failure.
- Pregnant women, as it can potentially harm the unborn baby.
- Breastfeeding mothers, as it passes into breast milk.
- If you have a history of asthma or other breathing disorders.
Advice From The Pharmacist
- Do not stop taking this medication suddenly without your doctor's advice.
- If you have surgery planned, inform the surgeon that you're taking Atenolol.
- Atenolol could make you feel dizzy or tired. Avoid driving or operating machinery until you know how this medication affects you.
- Check your pulse and blood pressure regularly. If your pulse becomes too slow and/or blood pressure too low, contact your doctor.
- Atenolol can mask the symptoms of low blood sugar in diabetic patients. Monitor your blood sugar levels regularly.
- If you have asthma or other breathing problems, taking atenolol might make these conditions worse. If breathing problems persist, consult your healthcare provider.
Side Effects of Atenolol
Common Side Effects
- You might feel sleepy or dizzy.
- You might have cold hands or feet.
- You might struggle with insomnia.
Uncommon/Severe Side Effects
- You might notice hair loss.
- Potential for allergic reactions including itching or rashes.
- In rare cases, one might experience chest pain, slow or irregular heartbeat or fainting spells. If these occur, get medical assistance immediately.
Risks and Warnings of Atenolol
- If you've a history of breathing problems (like asthma, chronic bronchitis, emphysema), heart failure, certain types of heartbeat irregularity (such as sinus bradycardia, third-degree atrioventricular block), discuss with your doctor before beginning with Atenolol.
- This drug can lead to changes in blood sugar levels and might prompt a cover-up of the symptoms of low blood sugar.
Interactions with Atenolol
Common Drug Interactions
- Digoxin
- Insulin and oral diabetes drugs
- MAO Inhibitors
- Calcium channel blockers
- Other beta-blockers
Common Food Interactions
- Avoid alcohol and caffeine.
- Maintain a balanced diet and regular exercise to assist with blood pressure control.
Alternatives to Atenolol
- Metoprolol
- Propranolol
- Carvedilol
- Bisoprolol
- Labetalol
