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Atenolol is a beta-blocker: a drug that lowers blood pressure, makes the heart beat slower and reduces its oxygen demand.

What is Atenolol?

Atenolol is a beta-blocker: a drug that lowers blood pressure, makes the heart beat slower and reduces its oxygen demand.

What is Atenolol used for?

Atenolol tablets can be prescribed for high blood pressure, heart disease (angina pectoris, cardiac arrhythmias or myocardial infarction), migraine, over-rapid thyroid functioning, anxiety and nervousness, and essential tremor.

How to use Atenolol

Take Atenolol tablets at fixed times, swallowed whole with some liquid. Note: You cannot simply stop using Atenolol – it should always be reduced gradually to prevent health problems.


Atenolol tablets are available in 25 mg, 50 mg and 100 mg. Ask the doctor which strength you should use, as the usual dosage depends on which condition you have. A missed dose can be taken at a later time. Follow the procedure as described in the leaflet. An overdose often causes very low blood pressure and heart rate, causing weakness, fatigue and asthma attacks. In this case, consult a doctor.

Side effects

Atenolol tablets may have the following side effects:

  • Dizziness due to a reduced blood pressure (these symptoms often disappear after continued use);
  • Stomach or intestinal symptoms (nausea, vomiting, constipation, diarrhoea);
  • Dry mouth;
  • Sweating,
  • Cold hands and feet.

You can find a complete list of side effects in the leaflet. Talk to the doctor if you experience severe side effects, or if you notice any that are not listed in this leaflet.

When should you not use Atenolol (contraindications)

You may not use Atenolol tablets if you are hypersensitive to the active substance atenolol or any of the excipients used. Consult a doctor about the use of Atenolol if you suffer from asthma or chronic obstructive pulmonary disease, an autoimmune disease or other serious condition.

Interaction with other drugs

Atenolol tablets may cause an interaction with other antihypertensive medications, anti-inflammatory painkillers, alpha- blockers, glucose-reducing drugs and epinephrine injections

Talk to a doctor or pharmacist if you are taking any of these drugs or other medications.

Pregnancy / breastfeeding

You may not use Atenolol tablets if you are breastfeeding. Also, the use of this medicine is not recommended if you are pregnant or want to become pregnant, unless your doctor advises otherwise.


If you use Atenolol tablets, you may feel dizzy during the first few days. This often disappears after a while and you will then be able to drive without any problems.


The combination of Atenolol tablets with alcohol may cause dizziness. Moderate your alcohol consumption to prevent this.

Affiliated doctors

You know perfectly well what's good and what isn't good for you. Nevertheless, making the right choice can be difficult. We are Dokteronline. We believe in self-management when it comes to your health.

Dr. E. Tanase

MD General practitioner / emergency medicine

Dr. P. Mester

MD General practitioner / internal medicine

Dr. I. Malik

MD General practitioner / general medicine
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