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CO-TRIMOXAZOLE 80 MG/400 MG TABLETS

Active substance(s): SULFAMETHOXAZOLE / TRIMETHOPRIM

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Package Leaflet: Information for the User

Co-Trimoxazole 80 mg/400 mg Tablets
co-trimoxazole

2 Before you take Co-Trimoxazole
Do not take Co-Trimoxazole if:
• you are allergic (hypersensitive) to sulfamethoxazole, trimethoprim
or any of the other ingredients of Co-Trimoxazole (see section
6: Further information)
• you are allergic to sulphonamide medicines. Examples include
sulphonylureas (such as gliclazide and glibenclamide) or thiazide
diuretics (such as bendroflumethiazide - a water tablet)
• you have liver or kidney problems
• you have ever had a problem with your blood
• it is for your child and they are less than 6 weeks old or were
premature. Unless it is for the treatment or prevention of
PCP. In this case, babies should be at least 4 weeks old.
If you are not sure if any of the above apply to you, talk to your doctor
or pharmacist before taking Co-Trimoxazole.
Take special care with Co-Trimoxazole
Before you take Co-Trimoxazole, tell your doctor or pharmacist if:
• you have severe allergies or asthma
• potentially life-threatening skin rashes (Stevens-Johnson syndrome,
toxic epidermal necrolysis) have been reported with the use of
Co-Trimoxazole appearing initially as reddish target-like spots or
circular patches often with central blisters on the trunk.
• additional signs to look for include ulcers in the mouth, throat,
nose, genitals and conjunctivitis (red and swollen eyes).
• these potentially life-threatening skin rashes are often accompanied
by flu-like symptoms. The rash may progress to widespread
blistering or peeling of the skin.
• the highest risk for occurrence of serious skin reactions is within the
first weeks of treatment.
• if you have developed Stevens-Johnson syndrome or toxic epidermal
necrolysis with the use of Co-Trimoxazole you must not be restarted on Co-Trimoxazole at any time.
• if you develop a rash or these skin symptoms, stop taking CoTrimoxazole, seek urgent advice from a doctor and tell him that you
are taking this medicine.
• • you have been told that you have a rare blood problem called
porphyria, which can affect your skin or nervous system
• you don’t have enough folic acid (a vitamin) in your body - which

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1 What Co-Trimoxazole is and what it is used for
Co-Trimoxazole 80 mg/400 mg Tablets (called ‘Co-Trimoxazole’
in this leaflet) are made up of two different medicines called
sulfamethoxazole and trimethoprim. Both belong to a group of
medicines called antibiotics. They are used to treat infections caused
by bacteria. Like all antibiotics, Co-Trimoxazole only works against
some types of bacteria. This means that it is only suitable for treating
some types of infections.
Co-Trimoxazole can be used to treat or prevent:
• lung infections (pneumonia or PCP) caused by a bacteria called
Pneumocystis jiroveci (previously known as Pneumocystis carinii )
• infections caused by a bacteria called Toxoplasma (toxoplasmosis).
Co-Trimoxazole can be used to treat:
• bladder or urinary tract infections (water infections)
• lung infections such as bronchitis
• ear infections such as otitis media
• an infection called nocardiosis, it can affect the lungs, skin
and brain.

Taking other medicines
Please tell your doctor or pharmacist if you are taking or have recently
taken any other medicines, including medicines obtained without
a prescription. This includes herbal medicines. This is because CoTrimoxazole can affect the way some medicines work. Also some other
medicines can affect the way Co-Trimoxazole works.
In particular tell your doctor or pharmacist if you are taking any of the
following medicines:
• Diuretics (water tablets), which help increase the amount of urine
you produce
• Pyrimethamine, used to treat and prevent malaria, and to
treat diarrhoea
• Ciclosporin, used after transplant operations or for your
immune system
• Medicines used to thin the blood such as warfarin
• Phenytoin, used to treat epilepsy (fits)
• Medicines for diabetes, such as glibenclamide, glipizide or
tolbutamide (sulphonylureas)
• Medicines to treat problems with the way your heart beats such as
digoxin or procainamide
• Amantadine, used to treat Parkinson’s disease, multiple sclerosis,
‘flu or shingles
• Medicines to treat HIV (Human Immunodeficiency Virus), called
zidovudine or lamivudine
• Medicines that can increase the amount of potassium in your blood,
such as diuretics (water tablets, which help increase the amount of
urine you produce), steroids (like prednisolone) and digoxin
• Methotrexate, a medicine used to treat cancer or for your immune
system. If you are not sure if any of the above apply to you, talk to
your doctor or pharmacist before taking Co-Trimoxazole.
Taking Co-Trimoxazole with food and drink
You should take Co-Trimoxazole with some food or drink. This will stop
you feeling sick (nausea) or having diarrhoea. Although it is better to
take it with food, you can still take it on an empty stomach.
Drink plenty of fluid such as water while you are taking CoTrimoxazole.
Pregnancy and breast-feeding
Talk to your doctor before taking this medicine if you are pregnant,
planning to get pregnant, or breast-feeding.
3 How to take Co-Trimoxazole 80 mg/400 mg Tablets
Always take Co-Trimoxazole exactly as your doctor has told you. The
label on your pack will tell you how much to take and how often
to take it. You should check with your doctor or pharmacist if you
are not sure.
Usual Dose
Adults and children over 12 years
• The usual dose is two tablets in a morning and two tablets in
an evening.
• Co-Trimoxazole should be taken for at least five days.
• Make sure that you finish the course of Co-Trimoxazole which your
doctor has prescribed.
Co-Trimoxazole 80 mg/400 mg Tablets are not usually given to
children under 12 years old. If they have been given to your child
please speak to your doctor or pharmacist for more information.
Special Dose
The dose of Co-Trimoxazole and how long you need to take it depends
on the infection you have and how bad it is. Your doctor may prescribe
you a different dose or length of course of Co-Trimoxazole to
• treat urinary tract (water) infections
• treat and prevent lung infections caused by the bacteria
Pneumocystis jiroveci

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In this leaflet:
1. What Co-Trimoxazole is and what it is used for
2. Before you take Co-Trimoxazole
3. How to take Co-Trimoxazole 80 mg/400 mg Tablets
4. Possible side effects
5. How to store Co-Trimoxazole
6. Further information

can make your skin pale and make you feel tired, weak and
breathless. This is known as anaemia
• you have ever had jaundice which can cause yellowing of your skin
or the whites of your eyes
• you have a problem with your metabolism called phenylketonuria
and are not on a special diet to help your condition
• you are elderly
• you are underweight or malnourished
• you have been told by your doctor that you have a lot of potassium
in your blood.
If you are not sure if any of the above apply to you, talk to your doctor
or pharmacist before taking Co-Trimoxazole.

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Read all of this leaflet carefully before you start taking
this medicine
• 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. Do not pass it on
to others. It may harm them, even if their symptoms are the
same as yours.
• If any of the side effects gets serious, or if you notice any
side effects not listed in this leaflet, please tell your doctor or
pharmacist.

If you take more Co-Trimoxazole than you should
If you take more Co-Trimoxazole than you should, talk to your doctor
or go to a hospital straight away. Take the medicine pack with you.
If you have taken too much Co-Trimoxazole you may
• feel or be sick
• feel dizzy or confused.
If you forget to take Co-Trimoxazole
• If you forget to take a dose, take it as soon as you remember it.
• Do not take a double dose to make up for the forgotten dose.
4 Possible side effects
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Like all medicines Co-Trimoxazole can cause side effects, although not
everybody gets them. You may experience the following side effects
with this medicine.
Stop taking Co-Trimoxazole and tell your doctor immediately if you
have an allergic reaction. Chances of an allergic reaction is very rare
(fewer than 1 in 10,000 people are affected), signs of an allergic
reaction include
Allergic reactions
• Difficulty in breathing
• Fainting
• Swelling of face
• Swelling of mouth, tongue or throat which may be red and painful
and/or cause difficulty in swallowing
• Chest pain
• Red patches on the skin
Very Common (more than 1 in 10 people)
• High levels of potassium in your blood, which can cause abnormal
heart beats (palpitations).
Common (less than 1 in 10 people)
• An infection called thrush or candidiasis which can affect your
mouth or vagina. It is caused by a fungus
• Headache
• Feeling sick (nausea)
• Diarrhoea
• Skin rashes.
Uncommon (less than 1 in 100)
• Being sick (vomiting).
Very Rare (less than 1 in 10,000 people)
• Fever (high temperature) or frequent infections
• Sudden wheeziness or difficulty breathing
• Potentially life-threatening skin rashes (Stevens-Johnson syndrome,
toxic epidermal necrolysis) have been reported (see Take special
care with Co-Trimoxazole).
• Mouth ulcers, cold sores and ulcers or soreness of your tongue
• Skin lumps or hives (raised, red or white, itchy patches of skin)
• Blisters on your skin or inside your mouth, nose, vagina or bottom
• Inflammation of the eye which causes pain and redness
• The appearance of a rash or sunburn when you have been outside
(even on a cloudy day)
• Low levels of sodium in your blood
• Changes in blood tests
• Feeling weak, tired or listless, pale skin (anaemia)
• Heart problems
• Jaundice (the skin and the whites of your eyes turn yellow). This can
occur at the same time as unexpected bleeding or bruising
• Pains in your stomach, which can occur with blood in your
faeces (poo)
• Pains in your chest, muscles or joints and muscle weakness
• Arthritis
• Problems with your urine. Difficulty passing urine. Passing more or
less urine than usual. Blood or cloudiness in your urine.
• Kidney problems
• Sudden headache or stiffness of your neck, accompanied by fever
(high temperature)
• Problems controlling your movements
• Fits (convulsions or seizures)
• Feeling unsteady or giddy
• Ringing or other unusual sounds in your ears
• Tingling or numbness in your hands and feet
• Seeing strange or unusual sights (hallucinations)
• Depression
• Muscle pain and/or muscle weakness in HIV patients. If any of the

6 Further information
What Co-Trimoxazole contains
Co-Trimoxazole is made up of two different medicines called
sulfamethoxazole and trimethoprim.
Each Co-Trimoxazole 80 mg/400 mg Tablet contains 400 mg
sulfamethoxazole and 80 mg trimethoprim.
The other ingredients of Co-Trimoxazole 80 mg/400 mg Tablets are:
povidone, sodium starch glycollate, magnesium stearate and
docusate sodium.
Sometimes your tablets will contain dioctyl sodium sulphosuccinate
instead of docusate sodium, but this will not affect the way that the
tablets work.

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If you take Co-Trimoxazole for a long time your doctor may
• take blood to test whether the medicine is working properly
• prescribe folic acid (a vitamin) for you to take at the same time as
Co-Trimoxazole.

5 How to store Co-Trimoxazole
• Keep out of the reach and sight of children.
• Do not store above 25ºC.
• Do not take the tablets after the expiry date shown on the bottle
label and carton.
• Store in the original package with this leaflet.
• Medicines should not be disposed of via wastewater or household
waste. Ask your pharmacist how to dispose of medicines no longer
required. These measures will help protect the environment.

What Co-Trimoxazole looks like and contents of the pack
Co-Trimoxazole 80 mg/400 mg Tablets are white, round,
biconvex tablets.
They are debossed with S2 on one side and scored on the other side.
Co-Trimoxazole 80 mg/400 mg Tablets are supplied to you in:
• amber glass bottles with a propylene snap fit closure, containing
50 or 100 tablets, or
• a carton containing PVC/aluminium foil blisters of 50 or
100 tablets in total.
Marketing authorisation holder and manufacturer
Marketing authorisation holder:

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If you have kidney problems your doctor may
• prescribe a lower dose of Co-Trimoxazole
• take blood to test whether the medicine is working properly.

side effects gets serious, or if you notice any side effects not listed
in this leaflet, please tell your doctor or pharmacist.

UK:
Aspen Pharma Trading Limited
3016 Lake Drive,
Citywest Business Campus,
Dublin 24,
Ireland
Manufacturer:
Aspen Bad Oldesloe GmbH
Industriestrasse 32-36, D-23843 Bad Oldesloe, Germany
Medical Information Enquiries
For any Medical Information enquires about this product,
please contact:
24 Hour Helpline +441748 828 391 (free phone UK only
0800 0087 392)
Other formats:
To listen to or request a copy of this leaflet in Braille, large
print or audio please call, free of charge:

Braille RNIB Helpline 0303 123 9999 (UK Only).
Please be ready to give the following information:

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• treat infections caused by the bacteria Toxoplasma (toxoplasmosis)
or Nocardia (nocardiosis).

Product name Co-Trimoxazole 80 mg/400 mg Tablets
Reference number PL 39699/0036
This is a service provided by the Royal National Institute
of Blind People.
Leaflet date: July 2015

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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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