Atenolol
Atenolol is a beta-blocker tablet used for high blood pressure, angina and recovery after a heart attack, sold as Atenolol and Tenormin in 25mg, 50mg and 100mg.
What atenolol is used for
Atenolol turns up in three situations. The commonest is a high blood pressure reading. The second is angina, the chest tightness that comes on with effort or stress. The third is the period after a heart attack, when it is taken to improve survival; a few people also use it to prevent migraines. In each case the tablet slows the heart and takes strain off the arteries. A raised reading gives no signal of its own, which is why a cuff, not a sensation, shows whether the tablet is doing its job.
How atenolol works
Atenolol is a beta-blocker. It occupies beta-1 receptors, found mostly in the heart, where adrenaline would otherwise push the pulse up. With that push gone the heart slows and pumps less forcefully, the vessels relax a little, and both blood pressure and the heart's oxygen demand drop.
Taking your tablets
Atenolol is taken once or twice daily, with the doses kept to the same hours. Treatment often starts at a low dose that is raised step by step, and it can take one to two weeks before the full effect on blood pressure is felt. Atenolol keeps blood pressure and angina under control rather than curing them, so it is usually taken long term. Keep the tablets somewhere dry and out of strong sunlight.
Side effects and interactions
Cold hands and feet are common, as is tiredness, especially in the first few weeks. Dizziness or lightheadedness when standing up is another, and it is most likely early on; rising slowly helps. Some people notice nausea, diarrhoea, a rash, dry eyes or low mood.
The effects to take seriously are wheezy or short breath, puffiness in the hands, feet or ankles, weight that climbs without reason, fainting, and a pulse that turns very slow, very fast or uneven. Atenolol can also mask the early signs of low blood sugar in diabetes, and allergic reactions may be stronger than usual while it is taken.
Decongestants for a blocked nose, other blood-pressure medicines and some herbal products can change what atenolol does.
Atenolol and Tenormin: which to choose
Two products are sold here, both plain tablets in 25mg, 50mg and 100mg: Atenolol and Tenormin. They share the same active ingredient, so the choice between them is about the label and the pack size you want rather than the medicine inside. Both sit in the heart and blood pressure range, where you will find the other tablets used for the same conditions. Staying with the strength you already take keeps things simple.
Sources
- Atenolol: MedlinePlus Drug Information — MedlinePlus / U.S. National Library of Medicine
- High blood pressure - NHS — NHS
Where can I order Atenolol for delivery in Hong Kong?
Atenolol can be ordered online with delivery to Hong Kong. The range covers Atenolol tablets and generic Tenormin, both as tablets in 25mg, 50mg and 100mg. Payment is by Visa, Mastercard or American Express on a secure, encrypted payment page, or by Bitcoin or Ethereum.
What is the price of Atenolol?
Each of the two atenolol products has its own price per pack, shown on its page in HKD or your selected currency; larger packs usually cost less per unit.
Do I need a prescription to order Atenolol?
PockDose does not ask you to upload a prescription when you order atenolol. See the ordering FAQ for details.
What is another name for atenolol?
Tenormin is a brand name of atenolol, which is also sold as Aten and Tenopress. Here, atenolol can be bought online as generic Tenormin and atenolol tablets. These are generics, not the original brand.
Is Tenormin the same as atenolol?
Tenormin is a brand name for atenolol, so the tablet inside is the same medicine. Both the plain Atenolol and Tenormin products are sold in 25mg, 50mg and 100mg; pick whichever pack size you need.
How long does atenolol take to work?
Give it one to two weeks before judging a blood pressure reading. The pulse can slow sooner, within hours of a tablet. Atenolol only holds pressure down while a steady amount is in the body, so gaps between tablets cost you the gain.
Can I drink alcohol with atenolol?
Alcohol widens the vessels and adds to the drop in pressure atenolol already causes, so a drink can bring on dizziness on standing. A heavy session makes that more likely; small amounts make it less so.
What happens if I stop taking atenolol suddenly?
Angina and high blood pressure can return quickly, and chest pain may be worse than it was before the tablets were started. The dose is usually lowered step by step rather than stopped in one go, so plan any change in advance.