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Cozaar® Comp 100/25mg Film-coated Tablets
Losazid® 100/25mg Film-coated Tablets
(losartan potassium and hydrochlorothiazide)
Your medicine is known by one of the above names, but will be referred to
as Cozaar Comp throughout this:
Patient Information Leaflet
Read all of this leaflet carefully before 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 nurse.
 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.
This medicine is available in different strengths.
In this leaflet:
1) What Cozaar Comp is and what it is used for
2) What you need to know before you take Cozaar Comp
3) How to take Cozaar Comp
4) Possible side effects
5) How to store Cozaar Comp
6) Contents of the pack and other information

1) What Cozaar Comp is and what it is used for
Cozaar Comp is a combination of an angiotensin II receptor antagonist
(losartan) and a diuretic (hydrochlorothiazide). Angiotensin II is a substance
produced in the body which binds to receptors in blood vessels, causing
them to tighten. This results in an increase in blood pressure. Losartan
prevents the binding of angiotensin II to these receptors, causing the blood
vessels to relax which in turn lowers the blood pressure.
Hydrochlorothiazide works by making the kidneys pass more water and salt.
This also helps to reduce blood pressure.
Cozaar Comp is indicated for the treatment of essential hypertension (high
blood pressure).

2) What you need to know before you take Cozaar Comp
Do not take Cozaar Comp:
 if you are allergic to losartan, hydrochlorothiazide or to any of the other
ingredients of this medicine (listed in section 6)
 if you are allergic to other sulfonamide‑derived substances (e.g. other
thiazides, some antibacterial drugs such as co‑trimoxazole, ask your
doctor if you are not sure)
 if you have severely impaired liver function
 if you have low potassium, low sodium or high calcium levels which
cannot be corrected by treatment
 if you are suffering from gout
 if you are more than 3 months pregnant. (It is also better to avoid Cozaar
Comp in early pregnancy – see Pregnancy section)
 if you have severely impaired kidney function or your kidneys are not
producing any urine.
 if you have diabetes or impaired kidney function and you are treated with
a blood pressure lowering medicine containing aliskiren.
Warnings and precautions
Talk to your doctor, pharmacist or nurse before taking Cozaar Comp.
You must tell your doctor if you think you are (or might become) pregnant.
Cozaar Comp is not recommended in early pregnancy, and must not be
taken if you are more than 3 months pregnant, as it may cause serious
harm to your baby if used at that stage (see pregnancy section).
It is important to tell your doctor before taking Cozaar Comp:
 if you have previously suffered from swelling of the face, lips, throat or
 if you take diuretics (water pills)
 if you are on a salt-restricted diet
 if you have or have had severe vomiting and/or diarrhoea
 if you have heart failure
 if your liver function is impaired (see sections 2 "Do not take Cozaar
 if you have narrow arteries to your kidneys (renal artery stenosis) or only
have one functioning kidney, or you have recently had a kidney transplant
 if you have narrowing of the arteries (atherosclerosis), angina pectoris
(chest pain due to poor heart function)
 if you have ‘aortic or mitral valve stenosis’ (narrowing of the valves of the
heart) or ‘hypertrophic cardiomyopathy’ (a disease causing thickening of
heart muscle)
 if you are diabetic
 if you have had gout
 if you have or have had an allergic condition, asthma or a condition that
causes joint pain, skin rashes and fever (systemic lupus erythematosus)
 if you have high calcium or low potassium levels or you are on a low
potassium diet

 if you need to have an anaesthetic (even at the dentist) or before surgery,
or if you are going to have tests to check your parathyroid function, you
must tell the doctor or medical staff that you are taking losartan potassium
and hydrochlorothiazide tablets
 if you suffer from primary hyperaldosteronism (a syndrome associated
with increased secretion of the hormone aldosterone by the adrenal
gland, caused by an abnormality within the gland).
 if you are taking any of the following medicines used to treat high blood

an ACE-inhibitor (for example enalapril, lisinopril, ramipril), in
particular if you have diabetes-related kidney problems.

Your doctor may check your kidney function, blood pressure, and the
amount of electrolytes (e.g. potassium) in your blood at regular intervals.
See also information under the heading “Do not take COZAAR COMP”
Children and adolescents
There is no experience with the use of Cozaar comp in children. Therefore,
Cozaar Comp should not be given to children.
Other medicines and Cozaar Comp
Tell your doctor or pharmacist if you are taking, have recently taken or
might take any other medicines.
Diuretic agents such as the hydrochlorothiazide contained in Cozaar Comp
may interact with other medicines.
Preparations containing lithium should not be taken with Cozaar Comp
without close supervision by your doctor.
Special precautionary measures (e.g. blood tests) may be appropriate if you
take potassium supplements, potassium-containing salt substitutes or
potassium-sparing medicines, other diuretics (“water tablets”), some
laxatives, medicines for the treatment of gout, medicines to control heart
rhythm or for diabetes (oral agents or insulins).
It is also important for your doctor to know if you are taking
 other medicines to reduce your blood pressure
 steroids
 medicines to treat cancer
 pain killers
 drugs for treatment of fungal infections
 arthritis medicines
 resins used for high cholesterol, such as colestyramine
 medicines which relax your muscles
 sleeping tablets
 opioid medicines such as morphine
 ‘pressor amines’ such as adrenaline or other drugs from the same group
 oral agents for diabetes or insulins.
Your doctor may need to change your dose and/or to take other
If you are taking an ACE-inhibitor or aliskiren (see also information under
the headings “Do not take Cozaar Comp” and “Warnings and
Please also inform your doctor you are taking Cozaar Comp and you will be
undergoing a radiographic procedure and will be given iodine contrast
Cozaar Comp with food and drink
You are advised not to drink alcohol whilst taking these tablets: alcohol and
Cozaar Comp tablets may increase each other’s effects.
Dietary salt in excessive quantities may counteract the effect of Cozaar
Comp tablets.
Cozaar Comp tablets may be taken with or without food.
Pregnancy and breast-feeding
You must tell your doctor if you think you are (or might become) pregnant.
Your doctor will normally advise you to stop taking Cozaar Comp before you
become pregnant or as soon as you know you are pregnant and will advise
you to take another medicine instead of Cozaar Comp. Cozaar Comp is not
recommended during pregnancy, and must not be taken when more than 3
months pregnant, as it may cause serious harm to your baby if used after
the third month of pregnancy.
Breast Feeding
Tell your doctor if you are breast feeding or about to start breast feeding.
Cozaar Comp is not recommended for mothers who are breast feeding, and
your doctor may choose another treatment for you if you wish to breast

Use in elderly patients
Cozaar Comp works equally well in and is equally well tolerated by most
older and younger adult patients. Most older patients require the same dose
as younger patients.
Driving and using machines
When you begin treatment with this medication, you should not perform
tasks which may require special attention (for example, driving an
automobile or operating dangerous machinery) until you know how you
tolerate your medicine.
Cozaar Comp contains lactose
If you have been told by your doctor that you have an intolerance to some
sugars, contact your doctor before taking this medicinal product.

3) How to take Cozaar Comp
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 decide on the appropriate dose of Cozaar Comp depending on your
condition and whether you are taking other medicines. It is important to
continue taking Cozaar Comp for as long as your doctor prescribes it in
order to maintain smooth control of your blood pressure.
High Blood Pressure
The usual dose of Cozaar Comp for most patients with high blood pressure
is 1 tablet of Cozaar Comp 50 mg/12.5 mg per day to control blood
pressure over the 24-hour period. This can be increased to 2 tablets once
daily of Losartan / Hydrochlorothiazide 50 mg/12.5 mg Film-Coated Tablets
or changed to 1 tablet daily of Losartan / Hydrochlorothiazide 100 mg/25 mg
Film-Coated Tablets (a stronger strength) per day. The maximum daily dose
is 2 tablets per day of Losartan / Hydrochlorothiazide 50 mg/12.5 mg FilmCoated Tablets or 1 tablet daily of Losartan / Hydrochlorothiazide 100
mg/25 mg Film-Coated Tablets
If you take more Cozaar Comp than you should
In case of an overdose, contact your doctor immediately so that medical
attention may be given promptly. Overdose can cause a drop in blood
pressure, palpitations, slow pulse, changes in blood composition, and
If you forget to take Cozaar Comp
Try to take Cozaar Comp daily as prescribed. However, if you miss a dose,
do not take an extra dose. Just resume your usual schedule.

4) Possible side effects
Like all medicines, this medicine can cause side effects, although not
everybody gets them.
If you experience the following, stop taking Cozaar Comp tablets and tell
your doctor immediately or go to the casualty department of your nearest
A severe allergic reaction (rash, itching, swelling of the face, lips, mouth or
throat that may cause difficulty in swallowing or breathing).
This is a serious but rare side effect, which affects more than 1 out of
10,000 patients but fewer than 1 out of 1,000 patients. You may need
urgent medical attention or hospitalisation.
The following side effects have been reported:
Common (may affect up to 1 in 10 people):
 Cough, upper airway infection, congestion in the nose, sinusitis, sinus
 Diarrhoea, abdominal pain, nausea, indigestion
 Muscle pain or cramps, leg pain, back pain
 Insomnia, headache, dizziness
 Weakness, tiredness, chest pain
 Increased potassium levels (which can cause an abnormal heart rhythm),
decreased haemoglobin levels
 Changes in kidney function including kidney failure
 Too low sugar in the blood (hypoglycaemia)
Uncommon (may affect up to 1 in 100 people):
 Anaemia, red or brownish spots on the skin (sometimes especially on the
feet, legs, arms and buttocks, with joint pain, swelling of the hands and
feet and stomach pain), bruising, reduction in white blood cells, clotting
problems, reduced number of platelets
 Loss of appetite, increased uric acid levels or frank gout, increased blood
sugar levels, abnormal blood electrolyte levels
 Anxiety, nervousness, panic disorder (recurring panic attacks), confusion,
depression, abnormal dreams, sleep disorders, sleepiness, memory
 Pins and needles or similar sensations, pain in the extremities, trembling,
migraine, fainting
 Blurred vision, burning or stinging in the eyes, conjunctivitis, worsening
eyesight, seeing things in yellow
 Ringing, buzzing, roaring or clicking in the ears, vertigo

 Low blood pressure, which may be associated with changes in posture
(feeling light-headed or weak when you stand up, angina (chest pain),
abnormal heartbeat, cerebrovascular accident (TIA, “mini-stroke”), heart
attack, palpitations
 Inflammation of blood vessels, which is often associated with a skin rash
or bruising
 Sore throat, breathlessness, bronchitis, pneumonia, water on the lungs
(which causes difficulty breathing), nosebleed, runny nose, congestion
 Constipation, obstipation, wind, stomach upsets, stomach spasms,
vomiting, dry mouth, inflammation of a salivary gland, toothache
 Jaundice (yellowing of the eyes and skin), inflammation of the pancreas
 Hives, itching, inflammation of the skin, rash, redness of the skin,
sensitivity to light, dry skin, flushing, sweating, hair loss
 Pain in the arms, shoulders, hips, knees or other joints, joint swelling,
stiffness, muscle weakness
 Frequent urination including at night, abnormal kidney function including
inflammation of the kidneys, urinary tract infection, sugar in the urine
 Decreased sexual appetite, impotence
 Swelling of the face, localised swelling (oedema), fever
Rare (may affect up to 1 in 1,000 people):
 Hepatitis (inflammation of the liver), abnormal liver function tests
Not known (frequency cannot be estimated from the available data):
 Flu-like symptoms
 Unexplained muscle pain with dark (tea-colored) urine (rhabdomyolysis)
 Low levels of sodium in the blood (hyponatraemia)
 Generally feeling unwell (malaise)
 Disturbed taste (dysgeusia)
Reporting 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: By reporting side effects you can help
provide more information on the safety of this medicine.

5) How to store Cozaar Comp
 Keep all medicines out of the sight and reach of children.
 Do not take Cozaar Comp after the expiry date printed on the carton or
blister label. The expiry date refers to the last day of the month.
 Do not store above 30°C. Store in the original package.
 Do not put the tablets into another container, they might get mixed up.
 Do not remove the tablets from the blister pack until you are ready to take
the medicine.
 If your doctor tells you to stop taking the tablets, please take them back to
the pharmacist for safe disposal. Only keep the tablets if your doctor tells
you to.
 If the tablets become discoloured or show any other signs of deterioration,
you should seek the advice of your pharmacist who will tell you what to
 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 to protect the environment.

6) Contents of the pack and other information
What Cozaar Comp contains
The active ingredients are losartan potassium and hydrochlorothiazide.
Each film-coated tablet contains 100mg of the active ingredient losartan
potassium (equivalent to 91.52mg losartan) and 25mg of the active
ingredient, hydrochlorothiazide.
Cozaar Comp also contain the following:
lactose monohydrate, hypromellose, hyprolose, magnesium stearate,
microcrystalline cellulose, pregelatinised maize starch, quinoline yellow
aluminium lake (E104), carnauba wax and titanium dioxide (E171).
What Cozaar Comp looks like and contents of the pack
Cozaar Comp tablets are yellow, film-coated, oval and coded ‘747’ on one
side and plain on the reverse.
Cozaar Comp is available as a pack of 28 tablets containing 2 blister strips
of 14 tablets each in a carton.
PL 10383/1510


Who makes and repackages your medicine?
Your medicine is manufactured by Merck Sharp & Dohme Ltd, Shotton
Lane, Cramlington, Northumberland, UK. Procured from within the EU and
repackaged by Product Licence Holder: Primecrown Ltd., 4/5 Northolt
Trading Estate, Belvue Road, Northolt, Middlesex, UB5 5QS.
Leaflet date: 19.05.2015
Cozaar® and Losazid® are trademarks of EI du Pont de Nemours and
Company, Wilmington, Delaware, USA.

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