Atenolol - oral

Patient Medicine Information
Why do I need this medicine?
Atenolol helps to keep your blood pressure under control.

This medicine may also be used to treat heart diseases such as angina pectoris (chest pain).

Atenolol may be used to treat other conditions as decided by your doctor.
How do I take this medicine?
Take Atenolol exactly as directed by your doctor or according to the instructions on the label. Do not take more or less than instructed by your doctor.

You may take this medicine with or without food. Try to take it at the same time each day.

Atenolol must be taken regularly for it to be effective. Continue taking this medicine even when you feel better. Do not stop taking it unless instructed otherwise, as stopping it suddenly could worsen your condition.
What should I do if I have forgotten to take this medicine?
Take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and return to your normal dosing schedule.

DO NOT double a dose under any circumstances.

If you often forget to take your medicine, let your doctor and pharmacist know.
When should I not use this medicine?
Alert your doctor if you have the following conditions:
  • slow heartbeat
  • heart block
  • heart failure (weakness and inability of the heart to pump blood)
  • sick sinus syndrome (abnormal heart rhythms)
  • severe blood vessel disorder
  • low blood pressure
  • metabolic acidosis (a condition when there is too much acid in the blood)
  • untreated phaeochromocytoma (a tumour of the adrenal gland)
as Atenolol may not be suitable for you.
What should I take note of while taking this medicine?
Inform your doctor if you have the following conditions:
  • diabetes
  • bronchospasm (breathing distress caused by narrowing of the airways)
  • Raynaud’s syndrome (poor blood circulation which makes the toes and fingers numb and pale)
  • Prinzmetal’s angina (a rare type of chest pain that occurs when a person is at rest)
  • myasthenia gravis (muscle weakness disorder)
  • psoriasis (a type of skin disease that is caused by itchy patches of thick, red skin and silvery scales)
  • thyroid disease
  • kidney disease
Let your doctor know if you are pregnant or breastfeeding.

If you are going for an operation, including minor surgery and dental work, inform your doctor or dentist that you are taking this medicine.

Be sure to check with your doctor or pharmacist before giving Atenolol to an elderly person. Elderly people may be more sensitive to the side effects.

Why is it important to keep my appointments with the doctor?

Keep your appointments with your doctor. Your doctor needs to monitor your condition and check your response to the medication regularly.

What lifestyle changes can I make to improve my blood pressure?

Regular exercise and eating a healthy diet will help lower your blood pressure and improve your overall health. Engage in physical activity (e.g. walking) at least 30 to 60 minutes on most days of the week. If you have not exercised for a long time, start with light exercises such as slow walks. Speak to your doctor about what type of exercise would be suitable for you. Follow a healthy diet plan by eating more fruits, vegetables, whole grains and low-fat dairy products and reduce your intake of foods high in saturated fat, cholesterol and sodium. Cutting down on deep-fried foods and using less salt when cooking can kick-start your healthy diet.

If you smoke, you should try to quit. Smoking is harmful to your blood pressure, heart and overall health. Speak to your doctor or pharmacist about ways to kick your smoking habit.

Try to keep stress levels under control as stress will cause your blood pressure to go up.
What side effects could I experience?
Atenolol may cause dizziness. If affected, do not drive or take part in any activity in which you need to be alert.

Other side effects may include any of the following: headache, nausea, diarrhoea, dry eyes or mouth, tiredness, coldness of hands and feet, hair loss, itchy patches of thick, red skin and silvery scales, hallucinations and unusual changes in mood or behaviour (being too depressed, agitated, or having compulsive and impulsive behaviour).

Atenolol may cause your blood pressure to fall suddenly when you get up from a sitting or lying down position and you may feel giddy. To minimise this problem, stand up slowly.

Inform your doctor if any of these side effects do not go away or are severe, or if you experience other side effects.
Can I take this with other medicines?
Inform your doctor and pharmacist if you are taking any of these medicines:
  • medicines for high blood pressure or heart disease e.g. verapamil, disopyramide, amiodarone, digoxin, clonidine, reserpine
  • medicines for diabetes e.g. insulin, oral antidiabetic medicines
  • NSAIDs (medicine for pain and inflammation) e.g. ibuprofen, indometacin
This list does not include all medicines that may interact with Atenolol.

Always notify your doctor and pharmacist if you are taking any other medicines, including herbal tonics such as traditional Chinese medicines, supplements and medicines that you buy without a prescription.
What special dietary instructions should I follow?
Avoid alcohol.
How should I store this medicine?
Store in a cool, dry place away from the reach of children.

Medicines must not be used past the expiry date.
This information is independently developed by MIMS based on atenolol - oral and is provided for your reference only. It is not a replacement for and should only be used in conjunction with full consultation with a licensed healthcare professional, the information provided by your pharmacist and/or the manufacturer of the medication. It may not contain all the available information you require and cannot substitute professional medical care, nor does it take into account all individual circumstances. Although great effort has been made to ensure content accuracy, we shall not be held responsible or liable for any claims or damages arising from the use or misuse of the information contained herein, its contents or omissions, or otherwise. Copyright © 2021 MIMS. All rights reserved. Powered by
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