Atenolol
Atenolol is a beta-blocker medication used to lower high blood pressure and ease chest pain. Tenormin is the listed formulation. It comes as a film-coated tablet for daily dosing.
Key points
- Also used to stabilise irregular heart rhythms, in addition to its roles in blood pressure and chest pain control.
- Works by blocking adrenaline from reaching beta-receptors on the heart, which slows the heartbeat and lightens the force of each contraction.
- Because the heart needs less oxygen once it works less forcefully, angina attacks become less frequent.
What is Atenolol?
Atenolol belongs to a class of medications called beta-blockers. These drugs slow the heart rate and reduce the force of each heartbeat. By doing so, they lower the pressure in your blood vessels.
What Atenolol is used for
Atenolol addresses Hypertension by reducing elevated blood pressure, which eases strain on the cardiovascular system. It also controls Angina Pectoris by reducing the heart’s oxygen demand, which decreases chest pain episodes. Additionally, it regulates Arrhythmia by stabilising irregular heart rhythms.
How does Atenolol work?
Atenolol works by blocking adrenaline from binding to beta-receptors on the heart. This action slows your heartbeat and reduces the force of contractions.
With the heart working less forcefully, blood pressure drops and the heart muscle needs less oxygen. This is why atenolol eases both high blood pressure and chest pain linked to angina.
Atenolol brands and forms
Atenolol is available as a film-coated tablet, designed for consistent absorption and easy swallowing. You can compare available options within Heart & Blood Pressure products.
Safety overview for Atenolol
What to check before using this medicine
Atenolol may not be suitable if you have certain heart conditions,
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Further reading
What is atenolol used for?
Atenolol is used to lower high blood pressure, ease chest pain linked to angina, and stabilise irregular heart rhythms. It is a beta-blocker that reduces strain on the cardiovascular system.
How does atenolol work?
Atenolol blocks adrenaline from binding to beta-receptors on the heart, which slows the heartbeat and reduces the force of each contraction. As the heart works less forcefully, blood pressure drops and the heart muscle needs less oxygen.
How long does atenolol take to work?
Atenolol usually starts to work within 1 to 2 hours, and its effect lasts about 24 hours.
What are the side effects of atenolol?
Common side effects include cold extremities, fatigue and nausea, while moderate effects can include bradycardia and sleep disturbances. A serious side effect is heart block, which requires immediate medical attention. Speak to a doctor or pharmacist if you have concerns about side effects.
Can atenolol be taken with other medicines?
Atenolol interacts with verapamil. Before taking atenolol with other medicines, check with a doctor or pharmacist.
Who should not take atenolol?
Atenolol may not be suitable if you have certain heart conditions, and it is contraindicated in severe bradycardia and cardiogenic shock. Ask a doctor or pharmacist if you are unsure whether it is suitable for you.
What atenolol products are available?
Products containing atenolol include Tenormin. Compare forms, strengths and packs in the listings above.
Can I buy atenolol over the counter in Thailand?
Yes. In Thailand atenolol is sold by pharmacists without a prescription, and Yasabai does not ask for one either. We are an online store, not a dispensing pharmacy; we arrange your order and delivery on your behalf.
Ordering without a prescription →Where can I buy atenolol online?
Our pharmacy partners ship from India to Thailand and across Asia in discreet packaging. Standard Airmail takes up to 3 weeks; Express Tracked Courier takes up to 1 week.
How ordering works →