PACKAGE LEAFLET: INFORMATION FOR THE USER
ATENOLOL 25 mg, 50 mg & 100 mg TABLETS
Read all of this leaflet carefully before you start taking this
medicine because it contains important information for you.
Keep this leaflet. You may need to read it again.
If you have any further questions, ask your doctor, pharmacist or
This medicine has been prescribed for you only. Do not pass it on
to others. It may harm them, even if their signs of illness are the
same as yours.
If you get any side effects, talk to your doctor, pharmacist or
nurse. This includes any possible side effects not listed in this
leaflet. See section 4.
What is in this leaflet:
1. What Atenolol Tablets are and what they used for
2. What you need to know before you take Atenolol Tablets
3. How to take Atenolol Tablets
4. Possible side effects
5. How to store Atenolol Tablets
6. Contents of the pack and other information
1. WHAT ATENOLOL TABLETS ARE AND WHAT THEY USED FOR
Atenolol is one of a group of medicines called beta-blockers. These
medicines work by blocking the beta-adrenoreceptors mainly in the
Atenolol Tablets may be used for:
High blood pressure
Relief of chest pain (angina)
Controlling heart beats which are irregular or too fast
Protecting the heart after a heart attack.
2. WHAT YOU NEED TO KNOW BEFORE YOU TAKE ATENOLOL
Do not take Atenolol Tablets if you:
Are allergic to atenolol or any of the other ingredients of this
medicine (listed in section 6)
Have heart or blood vessel disease including untreated heart
failure (due to recent heart attack), slow heart beat or low blood
Have disturbances in heart rhythm including sick sinus syndrome
or heart block
Have high blood pressure due to a tumour near the kidney
Have ‘metabolic acidosis’, abnormal chemical levels in the blood
such as potassium, sodium, calcium and urea
Have very poor circulation.
Warnings and precautions
Talk to your doctor or pharmacist before taking Atenolol Tablets if you:
Have heart failure or disease that is being controlled
Have chest pain (Prinzmetal’s angina)
Have ever had asthma or wheezing, you should not take this
medicine unless you have discussed these symptoms with the
Have Raynaud’s disease (poor circulation causing cold hands)
Have liver or kidney problems
Have thyrotoxicosis (a condition caused by an overactive thyroid
gland). Atenolol may hide the symptoms of thyrotoxicosis
Suffer from allergies
(a common skin condition which has thickening
patches of red inflamed skin, often covered by silvery scales).
Attend hospital or the dentist for surgery involving anaesthetic
Atenolol may need to be stopped before you have a general
Do not give this medicine to children because it is unlikely to be safe.
Other medicines and Atenolol Tablets
Tell your doctor or pharmacist if you are taking, have recently taken
or might take any other medicines, in particular any of the following:
Medicines used to treat high blood pressure including clonidine,
alfuzosin, nifedipine, verapamil, diltiazem
General anaesthetics used in operations, inform your doctor or
Medicines to treat an irregular heart-beat (Anti-arrhythmics), such
as disopyramide, quinidine, amiodarone, lidocaine, procainamide,
Medicines used to treat diabetes such as insulin and metformin
Medicines used to treat heart conditions such as digoxin
Non-steroidal anti-inflammatory drugs (NSAIDs) used to treat
pain and inflammation such as ibuprofen and indometacin
Pseudoephedrine which is used to treat colds and comes in many
Adrenaline (epinephrine) and isoprenaline which are heart
Noradrenaline (norepinephrine) and dobutamine which are used
to treat heart attacks
Medicines to treat depression such as amitriptyline and
Medicines called Monoamine Oxidase Inhibitors (MAOIs) which
are used to treat depression (e.g. phenelzine)
Barbiturates such as phenobarbital which is used to treat epilepsy
Medicines to treat mental illness such as chlorpromazine
Mefloquine which is used to prevent malaria
Medicines used to treat headache and migraine (e.g ergotamine
Aldesleukin which is used to treat kidney cancer
Alprostadil used to treat erection problems
Baclofen and tizanidine which is used to relax muscles
Levodopa used to treat Parkinson’s Disease
Phenothiazines used in psychiatric disorders, such as
Moxisylyte used to treat Raynaud’s syndrome (a circulatory
Atenolol Tablets with alcohol
Alcohol may cause your blood pressure to drop too low. You should
avoid or limit how much alcohol you drink whilst taking this medicine.
Discuss this with your doctor if you have any concerns.
Pregnancy and breast-feeding
Your doctor will only prescribe Atenolol Tablets if the benefits to
you outweigh the risks of the unborn child. Breast-feeding is not
recommended whilst taking Atenolol Tablets. Check with your doctor
if you are unsure.
Driving and using machines
Atenolol Tablets may make you feel tired or dizzy. Make sure you are
not affected before you drive or operate machinery.
Other precautions you should take:
If you see another doctor, attend hospital or the dentist for surgery
involving an anaesthetic, let them know what medicines you are
taking. Atenolol may need to be stopped before you have a general
3. HOW TO TAKE ATENOLOL TABLETS
Always take this medicine exactly as your doctor has told you. Check
with your doctor or pharmacist if you are not sure. Follow your doctor’s
instructions. Check the pharmacy label to see how many tablets to
take and how often to take them. If you are still unsure ask your doctor
Your doctor will start you on a low dose and increase it as required.
You must not stop taking Atenolol abruptly; your doctor will reduce
your dosage gradually.
The tablets should be swallowed whole with water.
The usual adult dose is:
High blood pressure: 50mg - 100mg daily
Angina: 100mg once daily or 50mg twice daily
Irregular heartbeats: 50-100mg daily, given as a single dose
After a heart attack:
Initial treatment will usually be by injection,
followed by 50mg by mouth 15 minutes after the injection, a
further 50mg 12 hours later and then 100mg 12 hours later to be
given once daily.
Elderly: The above dosages may sometimes be reduced
especially if you have damaged kidneys.
Patients with kidney disease: You will usually be given a lower
dose depending on how severe your kidney damage is. Patients
on haemodialysis should be given 50mg by mouth after each
Dimension: 240 x 200 mm
Swallow these tablets with a glass of water at the same time(s)
Take this medicine for as long as your doctor tells you to, it may
be dangerous to stop without their advice. Beta-blockers should
not be stopped suddenly.
Use in children
This medicine must not be given to children.
If you take more Atenolol Tablets than you should
If you (or someone else) swallow a lot of the tablets at the same time,
or if you think a child has swallowed any of the tablets, contact your
nearest hospital casualty department or your doctor immediately. If an
overdose has been taken there may be signs such as slow or irregular
heartbeat, low blood pressure, difficulty breathing and fainting.
If you forget to take Atenolol Tablets
If you forget to take a tablet take one as soon as you remember,
unless it is nearly time to take the next one.
Do not take a double dose to make up for a forgotten dose.
Take the remaining doses at the correct time.
If you have any further questions on the use of this medicine, ask your
doctor, pharmacist or nurse.
4. POSSIBLE SIDE EFFECTS
Like all medicines, this medicine can cause side effects, although not
everybody gets them.
If you experience any of the following side effects contact your
All medicines can cause allergic reactions, although serious
allergic reactions are very rare. STOP TAKING YOUR TABLETS
and tell your doctor straight away if you get any sudden
wheeziness, difficulty in breathing, swelling of the eyelids, face
or lips, rash, reddening of the skin or itching (especially affecting
your whole body)
Liver problems such as liver disease (yellowing of the skin or
whites of the eyes)
Increased bruising or bleeding from the nose or gums
Worsening of heart failure or heart attack (symptoms of heart
pain worsening generally on an already diagnosed condition).
Common side effects (may affect up to 1 in 10 people):
Feeling sick or being sick
Coldness and blueness of the fingers
Slow heart rate
Uncommon side effects (may affect up to 1 in 100 people):
Sleep disturbances such as insomnia and nightmares
Visual disturbances such as impaired vision
Increases in a liver enzyme called transaminase in the blood,
measured by a blood test.
Rare side effects (may affect up to 1 in 1,000 people):
Conjunctivitis (eye infection)
Rash which can be itchy, blood spots, bruising and discolouring
to the skin (purpura)
Worsening of psoriasis (skin condition)
Hair loss (alopecia)
Pins and needles
Hallucinations (seeing or hearing things that are not real)
Depression (feeling low)
Mental disorders such as schizophrenia
Heart block a common disorder of the heartbeat
Low blood pressure and feeling faint on standing
Leg cramps, pain and numbness made worse
Raynaud’s phenomenon-poor circulation causing cold hands
Temporary tightening of the chest that may occur in patients with
asthma or a history of asthma
Problems with the bile and liver leading to jaundice (yellowing of
skin and whites of eyes).
Very rare side effects (may affect up to 1 in 10,000 people):
An increase in some white blood cells that would be measured
by a blood test.
Not known (frequency cannot be estimated from the available data):
Lupus-like syndrome (a disease where the immune system
produces antibodies that attacks mainly skin and joints)
Changes in heart rhythm
Low blood pressure (fainting on standing)
Worsening of heart failure (where the heart cannot pump blood
around the body properly) or heart attack
Low blood sugar (hypoglycaemia)
High blood sugar (hyperglycaemia)
Overactive thyroid, your doctor may identify this in a blood test
There may be changes in the proteins in your blood; your doctor
may identify this from a blood test
Dyspnoea (shortness of breath)
Malaise (general feeling of being unwell)
Hypoglycaemia (low blood sugar) with symptoms of sweating,
weakness, hunger, dizziness, trembling, headache, flushing or
paleness, numbness, having a fast, pounding heartbeat.
Reporting of side effects
If you get any side effects, talk to your doctor, pharmacist or nurse.
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.
5. HOW TO STORE ATENOLOL TABLETS
Keep this medicine out of the sight and reach of children.
Do not store above 25
Store in the original package.
Keep the container or bottle tightly closed.
Do not use this medicine after the expiry date which is stated on the
label. The expiry date refers to the last day of that month.
Do not use this medicine if you notice visible signs of deterioration.
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.
6. CONTENTS OF THE PACK AND OTHER INFORMATION
What Atenolol Tablets contain
The active substance is atenolol.
Each tablet contains either 25 mg, 50 mg or 100 mg of the active
he other ingredients are: Gelatin, heavy magnesium carbonate
magnesium stearate, microcrystalline cellulose, maize starch, sodium
lauryl sulphate, talc.
What Atenolol Tablets look like and contents of the pack
Atenolol Tablets 25 mg, 50 mg & 100 mg: Circular, white, flat tablet
scored on one side.
Contents of pack:
Atenolol Tablets 25 mg, 50 mg & 100 mg: 14 tablets in a blister and 2
such blisters in a carton
Marketing Authorisation Holder and Manufacturer
Strides Pharma UK Ltd.
Unit 4, Metro Centre,
Tolpits Lane, Watford, Herts.
UK, WD18 9SS
Tel: 01923 255580
Fax: 01923 255581
This leaflet was last revised in 04/2018.
Dimension: 240 x 200 mm