Patient Leaflet Updated 17-Sep-2026 | Ipca Laboratories UK Ltd
Atenolol Tablets
Atenolol 25mg Film-coated Tablets
Atenolol 50 mg Film-coated Tablets
Atenolol 100mg Film-coated Tablets
1. What Atenolol is and what it is used for
2. What you need to know before you take Atenolol
3. How to take Atenolol
4. Possible side effects
5. How to store Atenolol
6. Contents of the pack and other information
Atenolol contains a medicine called atenolol, which belongs to a group of medicines called beta-blockers. Atenolol is used to:
It works by making your heart beat more slowly and with less force.
Do not take Atenolol if any of the above applies to you. If you are not sure, talk to your doctor or pharmacist before taking this medicine.
Talk to your doctor or pharmacist before taking Atenolol if:
If you are not sure if any of the above apply to you, talk to your doctor or pharmacist before taking Atenolol .
Other medicines and Atenolol Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines. This includes medicines that you buy without a prescription and herbal medicines.
This is because Atenolol can affect the way some other medicines work and some medicines can have an effect on Atenolol .
In particular, tell your doctor if you are taking any of the following medicines:
If you go into hospital to have a surgery, tell the anesthetist or medical staff that you are taking Atenolol. This is because you can get low blood pressure (hypotension) if you are given certain anaesthetics while you are taking Atenolol.
If you are pregnant or breast-feeding, think you may be pregnant or are planning to have a baby, ask your doctor or pharmacist for advice before taking this medicine.
If you feel dizzy or tired when taking this medicine, do not drive or use any tools or machines.
Your medicine is not likely to affect you being able to drive or use any tools or machines. However, it is best to wait to see how your medicine affects you before trying these activities.
This medicine contains less than 1 mmol sodium (23 mg) per tablet, that is to say essentially ‘sodium-free’.
Always take this medicine exactly as your doctor or pharmacist has told you. Check with your doctor or pharmacist if you are not sure.
If you are an elderly person, your doctor may decide to give you a lower dose, particularly if you have problems with your kidneys.
If you have severe kidney problems your doctor may decide to give you a lower dose.
This medicine must not be given to children.
If you take more Atenolol than prescribed by your doctor, talk to a doctor or go to a hospital straight away. Take the medicine pack with you so that the tablets can be identified.
If you forget to take a dose, take it as soon as you remember. If it is almost time for the next dose, skip the missed dose. Do not take a double dose to make up for a forgotten dose.
Do not stop taking this medicine without talking to your doctor. In some cases, you may need to stop taking it gradually.
Like all medicines, this medicine can cause side effects, although not everybody gets them.
If you have an allergic reaction, see a doctor straight away. The signs may include raised lumps on your skin (weals), or swelling of your face, lips, mouth, tongue or throat.
Common (may affect up to 1 in 10 people)
Uncommon (may affect up to 1 in 100 people)
Rare (may affect up to 1 in 1,000 people)
Very rare (may affect up to 1 in 10,000 people)
Not known (frequency cannot be estimated from the available data)
If you have any of the following conditions, they may get worse when you start to take your medicine. This happens rarely affecting less than 1 in 1,000 people.
If you get any side effects, talk to your doctor or pharmacist. This includes any possible side effects not listed in this leaflet. You can also report side effects directly via the Yellow Card Scheme at: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store. By reporting side effects you can help provide more information on the safety of this medicine.
Keep this medicine out of the sight and reach of children.
Do not use this medicine after the expiry date which is stated on the blister strip. The expiry date refers to the last day of that month.
Do not store above 25°C. Store your tablets in the original package. Keep the blister strip in the carton. This will protect your medicine from light and moisture.
Do not throw away any medicines via wastewater or household waste. Ask your pharmacist how to throw away medicines you no longer use. These measures will help protect the environment.
Atenolol 25 mg tablets are white to off white, circular 7.0mm, biconvex film-coated tablets with “25”debossed on one side and plain on other side.
Atenolol 50 mg tablets are white to off-white, circular 8.5mm, biconvex film-coated tablets with “50”debossed on one side and breakline on other side.
Atenolol 100 mg tablets are white to off white, circular 11.0mm, biconvex film-coated tablets with “100” debossed on one side and breakline on other side.
They are supplied in blister pack of 14 tablets. Pack size: 14 tablets, 28 tablets, 56 tablets, 84 tablets.
Not all pack sizes may be marketed.
This leaflet was revised in 07/2026
Silverbriar, Enterprise Park East, Sunderland,, Tyne and Wear, SR5 2TQ, UK
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08003685328
08003685328
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+44(0)7546 801 411