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Active substance(s): LOSARTAN POTASSIUM

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Cozaar® 50mg tablets
Losartan Potassium 50mg tablets


(losartan potassium)
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 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
- 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.
Your medicine is available using any one of the above names but will be
referred to as Cozaar throughout the following leaflet.
Other strengths are also available.
What is in this leaflet
1. What Cozaar is and what it is used for
2. What you need to know before you take Cozaar
3. How to take Cozaar
4. Possible side effects
5. How to store Cozaar
6. Contents of the pack and other information
Losartan (Cozaar) belongs to a group of medicines known as angiotensin-II
receptor antagonists. 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. Losartan slows the decrease of kidney
function in patients with high blood pressure and type 2 diabetes.
Cozaar is used
- to treat patients with high blood pressure (hypertension) in adults and in
children and adolescents 6-18 years of age.
- to protect the kidney in hypertensive type 2 diabetic patients with
laboratory evidence of impaired renal function and proteinuria ≥ 0.5 g per
day (a condition in which urine contains an abnormal amount of protein).
- to treat patients with chronic heart failure when therapy with specific
medicines called angiotensin-converting-enzyme inhibitors (ACE
inhibitors, medicine used to lower high blood pressure) is not considered
suitable by your doctor. If your heart failure has been stabilised with an
ACE inhibitor you should not be switched to losartan.
- in patients with high blood pressure and a thickening of the left ventricle,
Cozaar has been shown to decrease the risk of stroke (“LIFE indication”).
Do not take Cozaar:
- if you are allergic to losartan or to any of the other ingredients of this
medicine (listed in section 6),
- if you are more than 3 months pregnant. (It is also better to avoid Cozaar
in early pregnancy- see Pregnancy),
- if your liver function is severely impaired,
- 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.
You must tell your doctor if you think you are (or might become) pregnant.
Cozaar 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:
- if you have had a history of angiooedema (swelling of the face, lips, throat,
and/or tongue) (see also section 4 ‘Possible side effects’),
- if you suffer from excessive vomiting or diarrhoea leading to an extreme
loss of fluid and/or salt in your body,
- if you receive diuretics (medicines that increase the amount of water that
you pass out through your kidneys) or are under dietary salt restriction
leading to an extreme loss of fluid and salt in your body (see section 3
‘Dosage in special patient groups’),
- if you are known to have narrowing or blockage of the blood vessels
leading to your kidneys or if you have received a kidney transplant
- if your liver function is impaired (see sections 2 ‘Do not take Cozaar’ and 3
‘Dosage in special patient groups’),
- if you suffer from heart failure with or without renal impairment or
concomitant severe life threatening cardiac arrhythmias. Special caution is
necessary when you are treated with a ß-blocker concomitantly,
- if you have problems with your heart valves or heart muscle,
- if you suffer from coronary heart disease (caused by a reduced blood flow
in the blood vessels of the heart) or from cerebrovascular disease (caused
by a reduced blood circulation in the brain),
- 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.
- aliskiren
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”.
Children and adolescents
Cozaar has been studied in children. For more information, talk to your
Cozaar is not recommended for use in children suffering from kidney or liver
problems, as limited data are available in these patient groups. Cozaar is
not recommended for use in children under 6 years old, as it has not been
shown to work in this age group.
Other medicines and Cozaar
Tell your doctor or pharmacist if you are taking, have recently taken, or
might take any other medicines.
Take particular care if you are taking the following medicines while under
treatment with Cozaar:
- other blood pressure lowering medicines as they may additionally reduce
your blood pressure. Blood pressure may also be lowered by one of the
following drugs/ class of drugs: tricyclic antidepressants, antipsychotics,
baclofen, amifostine,

- medicines which retain potassium or may increase potassium levels (e.g.
potassium supplements, potassium-containing salt substitutes or
potassium-sparing medicines such as certain diuretics [amiloride,
triamterene, spironolactone] or heparin),
- non-steroidal anti-inflammatory drugs such as indomethacin, including
COX-2-inhibitors (medicines that reduce inflammation, and can be used to
help relieve pain) as they may reduce the blood pressure lowering effect
of losartan.
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” and “Warnings and precautions”).
If your kidney function is impaired, the concomitant use of these medicines
may lead to a worsening of the kidney function.
Lithium containing medicines should not be taken in combination with
losartan without close supervision by your doctor. Special precautionary
measures (e.g. blood tests) may be appropriate.
Cozaar with food and drink
Cozaar 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 before you
become pregnant or as soon as you know you are pregnant and will advise
you to take another medicine instead of Cozaar. Cozaar is not
recommended in early 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.
Tell your doctor if you are breast-feeding or about to start breast-feeding.
Cozaar is not recommended for mothers who are breast-feeding, and your
doctor may choose another treatment for you if you wish to breast-feed.
Especially if your baby is a newborn, or born prematurely.
Ask your doctor or pharmacist for advice before taking this medicine.
Driving and using machines
No studies on the effects on the ability to drive and use machines have been
Cozaar is unlikely to affect your ability to drive or use machines. However,
as with many other medicines used to treat high blood pressure, losartan
may cause dizziness or drowsiness in some people. If you experience
dizziness or drowsiness, you should consult your doctor before attempting
such activities.
Cozaar contains lactose
Cozaar contains lactose monohydrate. If you have been told by your doctor
that you have an intolerance to some sugars, contact your doctor before
taking this medicine.
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, depending on your condition and
whether you are taking other medicines. It is important to continue taking
Cozaar for as long as your doctor prescribes it in order to maintain smooth
control of your blood pressure.
Adult patients with High Blood Pressure
Treatment usually starts with 50 mg losartan (one tablet Cozaar 50 mg)
once a day. The maximal blood pressure lowering effect should be reached
3-6 weeks after beginning treatment. In some patients the dose may later be
increased to 100 mg losartan (two tablets Cozaar 50 mg or one tablet of
Cozaar 100 mg) once daily.
If you have the impression that the effect of losartan is too strong or too
weak, please talk to your doctor or pharmacist.
Use in children and adolescents
Children below 6 years of age
Cozaar is not recommended for use in children under 6 years old, as it has
not been shown to work in this age group.
Children aged 6 - 18 years old
The recommended starting dose in patients who weigh between 20 and
50 kg is 0.7 mg of losartan per kg of body weight administered once a day
(up to 25 mg of Cozaar). The doctor may increase the dose if blood
pressure is not controlled.
Other form(s) of this medicine may be more suitable for children; ask your
doctor or pharmacist.
Adult patients with high blood pressure and Type 2 diabetes
Treatment usually starts with 50 mg losartan (one tablet Cozaar 50 mg)
once a day. The dose may later be increased to 100 mg losartan (two
tablets Cozaar 50 mg or one tablet of Cozaar 100 mg) once daily depending
on your blood pressure response.
Losartan may be administered with other blood pressure lowering medicines
(e.g. diuretics, calcium channel blockers, alpha- or beta-blockers, and
centrally acting agents) as well as with insulin and other commonly used
medicines that decrease the level of glucose in the blood (e.g.
sulfonylureas, glitazones and glucosidase inhibitors).
Adult patients with Heart Failure
Treatment usually starts with 12.5 mg losartan (one tablet Cozaar 12.5 mg)
once a day. Generally, the dose should be increased weekly step-by-step
(i.e., 12.5 mg daily during the first week, 25 mg daily during the second
week, 50 mg daily during the third week, 100 mg daily during the fourth
week, 150 mg daily during the fifth week) up to the maintenance dose as
determined by your physician. A maximum dose of 150 mg losartan (for
example, three tablets of Cozaar 50 mg or one tablet each of Cozaar 100
mg and Cozaar 50 mg) once daily may be used.
In the treatment of heart failure, losartan is usually combined with a diuretic
(medicine that increases the amount of water that you pass out through your
kidneys) and/or digitalis (medicine that helps to make the heart stronger and
more efficient) and/or a beta-blocker.
Dosage in special patient groups
The doctor may advise a lower dose, especially when starting treatment in
certain patients such as those treated with diuretics in high doses, in
patients with liver impairment, or in patients over the age of 75 years. The
use of losartan is not recommended in patients with severe hepatic
impairment (see section "Do not take Cozaar").

The tablets should be swallowed whole with a glass of water. You should try
to take your daily dose at about the same time each day. It is important that
you continue to take Cozaar until your doctor tells you otherwise.
The following is a translation of the days of the week shown on the blister
LUN - Monday
MAR - Tuesday
MIE - Wednesday
JUE - Thursday
VIE - Friday
SAB - Saturday
DOM - Sunday
If you take more Cozaar than you should
If you accidentally take too many tablets, contact your doctor immediately.
Symptoms of overdose are low blood pressure, increased heartbeat,
possibly decreased heartbeat.
If you forget to take Cozaar
If you accidentally miss a daily dose, just take the next dose as normal. Do
not take a double dose to make up for a forgotten tablet.
If you have any further questions on the use of this medicine, ask your
doctor, pharmacist, or nurse.
Like all medicines, this medicine can cause side effects, although not
everybody gets them.

What Cozaar contains
The active substance is losartan potassium.
Each film-coated tablet contains 50mg of the active ingredient losartan
Your medicine also contains the following: Lactose, hypromellose,
hydroxypropylcellulose, magnesium stearate, microcrystalline cellulose,
pregelatinised maize starch and titanium dioxide (E171).
What Cozaar looks like and contents of the pack
Cozaar are white, oval tablets coded '952’ on one side with a breakline on
the reverse.
Cozaar is available in calendar blister packs of 28 tablets.
Manufactured by Merck Sharp & Dohme Ltd, Shotton Lane, Cramlington,
Northumberland, UK and is procured from the EU by the Product Licence
holder P.I.E. Pharma Ltd, 207 Kenton Road, Harrow, Middlesex HA3 0HD.

PL 15361/0097

Leaflet revision and issue date (Ref) 13.11.17[21]
Cozaar is a trademark of E.I. du Pont de Nemours and Company.

If you experience the following, stop taking losartan 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 with Cozaar:
Common (may affect up to 1 in 10 people):
- dizziness,
- low blood pressure (especially after excessive loss of water from the body
within blood vessels e.g. in patients with severe heart failure or under
treatment with high dose diuretics),
- dose‑ related orthostatic effects such as lowering of blood pressure
appearing when rising from a lying or sitting position,
- debility,
- fatigue,
- too little sugar in the blood (hypoglycaemia),
- too much potassium in the blood (hyperkalaemia),
- changes in kidney function including kidney failure,
- reduced number of red blood cells (anaemia),
- increase in blood urea, serum creatinine and serum potassium in patients
with heart failure.
Uncommon (may affect up to 1 in 100 people):
- somnolence,
- headache,
- sleep disorders,
- feeling of increased heart rate (palpitations),
- severe chest pain (angina pectoris),
- shortness of breath (dyspnoea),
- abdominal pain,
- obstipation,
- diarrhoea,
- nausea,
- vomiting,
- hives (urticaria),
- itching (pruritus),
- rash,
- localised swelling (oedema),
- cough.
Rare (may affect up to 1 in 1,000 people):
- hypersensitivity,
- angioedema,
- inflammation of blood vessels (vasculitis including Henoch-Schönlein
- numbness or tingling sensation (paraesthesia),
- fainting (syncope),
- very rapid and irregular heartbeat (atrial fibrillation),
- brain attack (stroke),
- inflammation of the liver (hepatitis),
- elevated blood alanine aminotransferase (ALT) levels, usually resolved
upon discontinuation of treatment.
Not known (frequency cannot be estimated from the available data):
- reduced number of thrombocytes,
- migraine,
- liver function abnormalities,
- muscle and joint pain,
- flu-like symptoms,
- back pain and urinary tract infection,
- increased sensitivity to the sun (photosensitivity),
- unexplained muscle pain with dark (tea-coloured) urine (rhabdomyolysis),
- impotence,
- inflammation of the pancreas (pancreatitis),
- low levels of sodium in the blood (hyponatraemia),
- depression,
- generally feeling unwell (malaise),
- ringing, buzzing, roaring, or clicking in the ears (tinnitus),
- disturbed taste (dysgeusia).
Side effects in children are similar to those seen in adults.
Reporting of side effects
If you get any side effects, talk to your doctor or pharmacist. This includes
any possible side effects not listed on this leaflet. You can also report side
effects directly via the Yellow Card Scheme at: 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.
Keep out of the sight and reach of children.
Do not use Cozaar after the expiry date which is stated on the carton. The
expiry date refers to the last day of that month.
Do not store above 30oC. Store in a dry place.
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.

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