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TENORMIN 25MG TABLETS

Active substance(s): ATENOLOL

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Package leaflet: Information for the patient
Tenormin 25 mg Tablets
atenolol
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 or pharmacist.
• 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 or pharmacist. This includes any possible
side effects not listed in this leaflet. See section 4.
What is in this leaflet
1. What Tenormin is and what it is used for
2. What you need to know before you take Tenormin
3. How to take Tenormin
4. Possible side effects
5. How to store Tenormin
6. Contents of the pack and other information

1.

What Tenormin is and what it is used for

Tenormin contains a medicine called atenolol. This belongs to a group of medicines called
beta-blockers. Tenormin is used to:
• Treat high blood pressure (hypertension).
• Treat uneven heart beats (arrhythmias).
• Help prevent chest pain (angina).
• Protect the heart in the early treatment after a heart attack (myocardial infarction).
It works by making your heart beat more slowly and with less force.

2.

What you need to know before you take Tenormin

Do not take Tenormin:


If you are allergic to atenolol or any of the other ingredients of this medicine (listed in
section 6).



If you have ever had any of the following heart problems:
- heart failure which is not under control (this usually makes you breathless and causes
your ankles to swell)
- second- or third-degree heart block (a condition which may be treated by a pacemaker)
- very slow or very uneven heart beats, very low blood pressure or very poor circulation.



If you have a tumour called phaeochromocytoma that is not being treated. This is usually
near your kidney and can cause high blood pressure. If you are being treated for
phaeochromocytoma, your doctor will give you another medicine, called an alphablocker, to take as well as Tenormin.

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If you have been told that you have higher than normal levels of acid in your blood
(metabolic acidosis).

Do not take Tenormin if any of the above apply to you. If you are not sure, talk to your doctor
or pharmacist before taking Tenormin.
Warnings and precautions
Talk to your doctor or pharmacist before taking Tenormin if:
• You have asthma, wheezing or any other similar breathing problems, or you get
allergic reactions, for example to insect stings. If you have ever had asthma or
wheezing, do not take this medicine without first checking with your doctor.


You have a type of chest pain (angina) called Prinzmetal's angina.



You have poor blood circulation or controlled heart failure.



You have first-degree heart block.



You have diabetes. Your medicine may change how you respond to having low blood
sugar. You may feel your heart beating faster.



You have thyrotoxicosis (a condition caused by an overactive thyroid gland). Your
medicine may hide the symptoms of thyrotoxicosis.



You have problems with your kidneys. You may need to have some check-ups during
your treatment.

If you are not sure if any of the above apply to you, talk to your doctor or pharmacist before
taking Tenormin.
Other medicines and Tenormin
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 Tenormin can affect the way some other medicines work and some medicines
can have an effect on Tenormin.
In particular, tell your doctor if you are taking any of the following medicines:
• Clonidine (for high blood pressure or migraine). If you are taking clonidine and
Tenormin together, do not stop taking clonidine unless your doctor tells you to do so. If
you have to stop taking clonidine, your doctor will give you careful instructions about
how to do it.


Verapamil, diltiazem and nifedipine (for high blood pressure or chest pain).



Disopyramide, quinidine or amiodarone (for an uneven heart beat).



Digoxin (for heart problems).



Adrenaline, also known as epinephrine (a medicine that stimulates the heart).



Ibuprofen or indometacin (for pain and inflammation).



Insulin or medicines that you take by mouth for diabetes.

• Medicines to treat nose or sinus congestion or other cold remedies (including those you
can buy in the pharmacy).
Operations

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If you go into hospital to have an operation, tell the anaesthetist or medical staff that you are
taking Tenormin. This is because you can get low blood pressure (hypotension) if you are given
certain anaesthetics while you are taking Tenormin.
Pregnancy, breast-feeding and fertility
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.
Driving and using 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.



If you feel dizzy or tired when taking this medicine, do not drive or use any tools or
machines.

Tenormin contains glycerol
Tenormin contains glycerol which may cause headache, stomach upset and diarrhoea.

3.

How to take Tenormin

Always take this medicine exactly as your doctor or pharmacist has told you. Check with your
doctor or pharmacist if you are not sure.


Your doctor will tell you how many tablets to take each day and when to take them. Read
the label on the carton to remind you what the doctor said.



Swallow your Tenormin tablet whole with a drink of water.



Try to take your tablet at the same time each day.

Adults


High blood pressure (hypertension): the recommended dose is 50 mg to 100 mg a day.



Chest pain (angina): the recommended dose is 100 mg a day or 50 mg twice a day.



Uneven heart beats (arrhythmias): the recommended dose is 50 mg to 100 mg a day.



The early treatment of a heart attack (myocardial infarction): the recommended dose is
50 mg to 100 mg a day.

Older people
If you are an older person, your doctor may decide to give you a lower dose, particularly if you
have problems with your kidneys.
People with severe kidney problems
If you have severe kidney problems your doctor may decide to give you a lower dose.
Use in Children
This medicine must not be given to children.
If you take more Tenormin than you should
If you take more Tenormin 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 Tenormin

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If you forget to take a dose, take it as soon as you remember. However, 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.
If you stop taking Tenormin
Do not stop taking Tenormin without talking to your doctor. In some cases, you may need to
stop taking it gradually.

4.

Possible side effects

Like all medicines, this medicine can cause side effects, although not everybody gets them.
Allergic reactions:
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.
Other possible side effects:
Common (may affect up to 1 in 10 people)
• You may notice that your pulse rate becomes slower while you are taking the tablets. This
is normal, but if you are concerned please tell your doctor about it.
• Cold hands and feet.
• Diarrhoea.
• Feeling sick (nausea).
• Feeling tired.
Uncommon (may affect up to 1 in 100 people)
• Disturbed sleep.
Rare (may affect up to 1 in 1,000 people)



















Heart block (which can cause dizziness, abnormal heart beat, tiredness or fainting).
Numbness and spasm in your fingers which is followed by warmth and pain (Raynaud’s
disease).
Mood changes.
Nightmares.
Feeling confused.
Changes in personality (psychoses) or hallucinations.
Headache.
Dizziness (particularly when standing up).
Tingling of your hands.
Being unable to get an erection (impotence).
Dry mouth.
Dry eyes.
Disturbances of vision.
Thinning of your hair.
Skin rash.
Reduced numbers of platelets in your blood (this may make you bruise more easily).
Purplish marks on your skin.
Jaundice (causing yellowing of your skin or the whites of your eyes).

Very rare (may affect up to 1 in 10,000 people)

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Changes to some of the cells or other parts of your blood. Your doctor may take blood
samples every so often to check whether Tenormin has had any effect on your blood.

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).
Conditions that may get worse
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.
• Psoriasis (a skin condition).


Being short of breath or having swollen ankles (if you have heart failure).



Asthma or breathing problems.



Poor circulation.

Reporting of side effects
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. Website: www.mhra.gov.uk/yellowcard. By reporting side effects you can help
provide more information on the safety of this medicine.

5.

How to store Tenormin



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 25oC. 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.

6.

Contents of the pack and other information

What Tenormin contains
The active substance is atenolol. Each tablet contains 25 mg (milligrams) of atenolol.
The other ingredients are gelatin, magnesium carbonate, magnesium stearate,
methylhydroxypropylcellulose, sodium laurilsulfate, maize starch, titanium dioxide (E171) and
glycerol.
What Tenormin looks like and contents of the pack
Tenormin 25 mg Tablets are white. They come in packs (blister strips) containing 28 tablets.
Marketing Authorisation Holder and Manufacturer
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The Marketing Authorisation for Tenormin 25 mg Tablets is held by AstraZeneca UK
Limited, 600 Capability Green, Luton, LU1 3LU, UK.
Tenormin 25 mg Tablets are manufactured by AstraZeneca UK Limited, Silk Road Business
Park, Macclesfield, Cheshire, SK10 2NA, UK.

To listen to or request a copy of this leaflet in Braille, large print or
audio please call, free of charge:
0800 198 5000 (UK only)
Please be ready to give the following information:
Product name
Tenormin 25 mg Tablets
Reference number
17901/0052
This is a service provided by the Royal National Institute of Blind
People.
Leaflet prepared: November 2015.
© AstraZeneca 2015.
Tenormin is a trade mark of the AstraZeneca group of companies.
CV 15 0132

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Source: Medicines and Healthcare Products Regulatory Agency

Disclaimer: Every effort has been made to ensure that the information provided here is accurate, up-to-date and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. This information has been compiled for use by healthcare practitioners and consumers in the United States. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate that the drug or combination is safe, effective or appropriate for any given patient. If you have questions about the substances you are taking, check with your doctor, nurse or pharmacist.

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