Olmesartan medoxomil and hydrochlorothiazide
Consumer Medicine Information
What is in this leaflet
This leaflet answers some common questions about OLMESARTAN HCT - MYL.
It does not contain all the available information.
It does not take the place of talking to your doctor or pharmacist.
All medicines have risks and benefits. Your doctor has weighed the risks of you taking
OLMESARTAN HCT - MYL against the benefits he/she expects it will have for you.
If you have any concerns about taking this medicine, ask your doctor or pharmacist.
Keep this leaflet with your OLMESARTAN HCT - MYL Tablets.
You may need to read it again.
What OLMESARTAN HCT - MYL is used for
OLMESARTAN HCT - MYL is used to treat high blood pressure which is sometimes called
Everyone has blood pressure. This pressure helps push blood all around your body.
Your blood pressure changes at different times of the day, depending on how busy or
worried you are. You have hypertension (high blood pressure) when your blood pressure
stays higher than is needed, even when you are calm and relaxed.
There are usually no symptoms of hypertension. The only way of knowing that you have
hypertension is to have your blood pressure checked on a regular basis. If high blood
pressure is not treated it can lead to serious health problems, including stroke,
heart disease and kidney failure.
How OLMESARTAN HCT - MYL works
OLMESARTAN HCT - MYL belongs to a group of medicines known as angiotensin-II receptor
antagonists. Angiotensin-II is a substance produced in the body which causes blood
vessels to tighten. OLMESARTAN HCT - MYL blocks the action of angiotensin-II and
therefore relaxes your blood vessels. This helps lower your blood pressure.
OLMESARTAN HCT - MYL also contains a diuretic which reduces the amount of fluid in
the body. This also helps to lower blood pressure.
Your doctor may have prescribed OLMESARTAN HCT - MYL for another reason. Ask your
doctor if you have any questions about why OLMESARTAN HCT - MYL has been prescribed
OLMESARTAN HCT - MYL is not addictive.
This medicine is available only with a doctor's prescription.
Before you take OLMESARTAN HCT - MYL
When you must not take it
Do not take OLMESARTAN HCT - MYL if you have an allergy to olmesartan, sulfonamide
derived medicines (e.g. thiazide diuretics), or any of the ingredients listed at the
end of this leaflet
Symptoms of an allergic reaction to OLMESARTAN HCT - MYL may include skin rash, itchiness,
shortness of breath, swelling of the face, lips or tongue, muscle pain or tenderness
or joint pain.
you have serious problems with your kidneys
you have serious problems with your liver
you have low potassium or sodium levels in the blood
you have high calcium or uric acid levels in the blood.
you have diabetes and are taking a medicine called aliskiren to reduce blood pressure.
Do not take OLMESARTAN HCT - MYL if you are pregnant or breastfeeding.
OLMESARTAN HCT - MYL may enter your womb or it may pass into the breast milk and there
is the possibility that your baby may be affected.
If pregnancy is discovered OLMESARTAN HCT - MYL should be discontinued as soon as
Do not take OLMESARTAN HCT - MYL after the expiry date printed on the pack or if the
packaging is torn or shows signs of tampering.
If you are not sure whether you should start taking OLMESARTAN HCT - MYL, talk to
Before you start to take it
Tell your doctor if you have allergies to:
any other medicines
any other substances, such as foods, preservatives or dyes.
Tell your doctor if you have or have had any medical conditions, especially the following:
excessive vomiting or diarrhoea recently
Systemic Lupus Erythematosus (SLE)
high levels of potassium in your blood.
problems with your adrenal glands (small glands above the kidneys)
You must also tell your doctor if you:
are following a very low salt diet
you are or intend to become pregnant or plan to breastfeed.
you are taking potassium supplements, potassium-sparing agents, potassium-containing
salt substitutes or other medicines that may increase serum potassium (e.g., trimethoprim-containing
you have skin cancer or if you develop a new skin lesion during treatment. Treatment
with hydrochlorothiazide, particularly long-term use with high doses, may increase
the risk of some types of skin and lip cancer (non-melanoma skin cancer). Discuss
with your doctor how to protect your skin from sun exposure, and avoid artificial
If you have not told your doctor about any of the above, tell him/her before you start
taking OLMESARTAN HCT - MYL.
Taking other medicines
Tell your doctor or pharmacist if you are taking any other medicines, including any
that you buy without a prescription from your pharmacy, supermarket or health food
Some medicines and OLMESARTAN HCT - MYL may interfere with each other. These include:
other medicines used to treat high blood pressure
other diuretics, also known as fluid or water tablets
non-steroidal anti-inflammatory drugs (NSAIDs) or COX-2 inhibitors, medicines used
to relieve pain, swelling and other symptoms of inflammation, including arthritis
potassium supplements or potassium-containing salt substitutes
other medicines that may increase serum potassium (e.g., trimethoprim-containing products)
lithium or antidepressant medicines
insulin and tablets used to treat diabetes
antacids, medicines used to treat heartburn and indigestion
medicines which lower your immune system, such as corticosteroids and cytotoxic medicines
used to treat cancer (including radiation therapy)
laxatives, medicines used to treat constipation
medicines used to relieve pain
medicines used to treat epilepsy
antiarrhythmics which treat irregular heart beats
cholestyramine and colestipol, used to treat high cholesterol
any medicine that contains aliskiren
any medicines that contain colesevelam.
These medicines may be affected by OLMESARTAN HCT - MYL, or may affect how well it
works. You may need different amounts of your medicine, or you may need to take different
Other medicines not listed above may also interfere with OLMESARTAN HCT - MYL. Your
doctor and pharmacist have more information on medicines to be careful with or avoid
while taking this medicine.
Use in children
The safety and effectiveness of OLMESARTAN HCT - MYL in children has not been established.
How to take OLMESARTAN HCT - MYL
Follow all directions given to you by your doctor or pharmacist carefully.
They may differ from the information contained in this leaflet.
Your doctor or pharmacist will tell you which OLMESARTAN HCT - MYL tablet you will
need to take each day. This depends on your condition and whether or not you are
taking any other medicines.
If you do not understand the instructions on the box, ask your doctor or pharmacist
How much to take
The dose of OLMESARTAN HCT - MYL is one tablet to be taken once a day.
How to take it
Swallow OLMESARTAN HCT - MYL whole with a full glass of water.
Do not chew the tablets.
When to take it
Take OLMESARTAN HCT - MYL at about the same time each day, with or without food.
Taking your tablets at the same time each day will have the best effect.
It will also help you remember when to take the tablets. It does not matter whether
you take it with or without food.
How long to take it
OLMESARTAN HCT - MYL helps control your condition, but does not cure it. Therefore
you must take OLMESARTAN HCT - MYL every day. Continue taking your medicine for as
long as your doctor tells you.
If you forget to take it
If it is almost time for your next dose, skip the dose you missed and take your next
dose when you are meant to.
Otherwise, take it as soon as you remember and then go back to taking your medicine
as you would normally.
Do not take a double dose to make up for the dose that you missed.
This may increase the chance of you getting an unwanted side effect.
If you are not sure what to do, ask your doctor or pharmacist.
If you have trouble remembering to take your medicine, ask your pharmacist for some
If you take too much (overdose)
Immediately telephone your doctor or the Australian Poisons Information Centre (telephone
13 11 26) or go to Accident and Emergency at the nearest hospital, if you think that
you or anyone else may have taken too much OLMESARTAN HCT - MYL. Do this even if
there are no signs of discomfort or poisoning.
Keep telephone numbers for these places handy.
If you take too much OLMESARTAN HCT - MYL, you may feel light-headed, dizzy or you
may faint. You may also have a fast heart beat.
While you are using OLMESARTAN HCT - MYL
Things you must do
If you are about to be started on any new medicine, tell your doctor, dentist or pharmacist
that you are taking OLMESARTAN HCT - MYL.
Make sure you drink enough water during exercise and hot weather when you are taking
OLMESARTAN HCT - MYL, especially if you sweat a lot.
If you do not drink enough water while taking OLMESARTAN HCT - MYL, you may feel faint,
light-headed or sick. This is because your blood pressure is dropping suddenly.
If you continue to feel unwell, tell your doctor.
If you have excess vomiting and/or diarrhoea, while taking OLMESARTAN HCT - MYL, tell
You may lose too much water and salt and your blood pressure may drop too much.
If you feel light-headed or dizzy after taking your first dose of OLMESARTAN HCT -
MYL, or when your dose is increased, tell your doctor immediately.
If you plan to have surgery that needs a general anaesthetic, tell your doctor or
dentist that you are taking OLMESARTAN HCT - MYL.
Your blood pressure may drop suddenly.
If you become pregnant while taking OLMESARTAN HCT - MYL, tell your doctor immediately.
If you are about to have any blood tests, tell your doctor that you are taking OLMESARTAN
HCT - MYL.
OLMESARTAN HCT - MYL may interfere with the results of some tests.
Tell your doctor if photosensitivity reaction occurs during your treatment.
Tell your doctor immediately in case of acute onset of decreased visual acuity or
ocular pain. These could be symptoms of fluid accumulation in the vascular layer of
the eye (choroidal effusion) or an increase of pressure in your eye and can happen
within hours to weeks of taking OLMESARTAN HCT - MYL. This can lead to permanent vision
loss, if not treated.
Have your blood pressure checked when your doctor says, to make sure OLMESARTAN HCT
- MYL is working.
Go to your doctor regularly for a check-up.
Your doctor may occasionally do a blood test to check your potassium levels and see
how your kidneys are working.
Things you must not do
Do not give OLMESARTAN HCT - MYL to anyone else, even if they have the same condition
Do not take OLMESARTAN HCT - MYL to treat any other complaints unless your doctor
or pharmacist tells you to.
Do not stop taking OLMESARTAN HCT - MYL, or lower the dosage, without checking with
Things to be careful of
If you feel light-headed, dizzy or faint when getting out of bed or standing up, get
Standing up slowly, especially when you get up from bed or chairs, will help your
body get used to the change in position and blood pressure. If this problem continues
or gets worse, talk to your doctor.
Be careful driving or operating machinery until you know how OLMESARTAN HCT - MYL
As with other medicines in this class, OLMESARTAN HCT - MYL may cause dizziness, light-headedness
or tiredness in some people. Make sure you know how you react to OLMESARTAN HCT -
MYL before you drive a car, operate machinery, or do anything else that could be dangerous
if you are dizzy or light-headed. If this occurs do not drive. If you drink alcohol,
dizziness or light-headedness may be worse.
Things that would be helpful for your blood pressure
Some self help measures suggested below may help your condition. Talk to your doctor
or pharmacist about these measures and for more information.
Alcohol - your doctor may advise you to limit your alcohol intake.
Weight - your doctor may suggest losing some weight to help lower your blood pressure
and help lessen the amount of work your heart has to do. Some people may need a dietician's
help to lose weight.
Diet - eat a healthy diet which includes plenty of fresh vegetables, fruit, bread
(preferably wholegrain), cereals and fish. Also eat less sugar and fat (especially
saturated fat) which includes sausages, fatty meats, full cream dairy products, biscuits,
cakes, pastries, chocolates, chips and coconut. Monounsaturated and polyunsaturated
fats from olive oil, canola oil, avocado and nuts are beneficial in small quantities.
Salt - your doctor may advise you to watch the amount of salt in your diet. To reduce
your salt intake you should avoid using salt in cooking or at the table and avoid
cooked or processed foods containing high sodium (salt) levels.
Exercise - regular exercise, maintained over the long term, helps to reduce blood
pressure and helps get the heart fitter. Regular exercise also improves your blood
cholesterol levels, helps reduce your weight and stress levels, and improves your
sleep, mood and ability to concentrate. However, it is important not to overdo it.
Walking is good exercise, but try to find a route that is reasonably flat. Before
starting any exercise, ask your doctor about the best kind of programme for you.
Smoking - your doctor may advise you to stop smoking or at least cut down. There
are enormous benefits to be gained from giving up smoking. There are many professionals,
organisations and strategies to help you quit. Ask your doctor or pharmacist for
further information and advice.
Tell your doctor or pharmacist as soon as possible if you do not feel well while you
are taking OLMESARTAN HCT - MYL.
OLMESARTAN HCT - MYL helps most people with high blood pressure, but it may have unwanted
side effects in a few people. All medicines can have side effects. Sometimes they
are serious, most of the time they are not. You may need medical treatment if you
get some of the side effects.
If you are over 65 years of age you may have an increased chance of getting side effects.
Hydrochlorothiazide, a component of this medicine, increases sensitivity of the skin
to the sun and may increase the risk of some types of skin and lip cancer (non-melanoma
Hydrochlorothiazide, a component of this medicine, may cause a decrease in vision
or pain in your eyes due to high pressure (possible signs of fluid accumulation in
the vascular layer of the eye (choroidal effusion) or acute angle-closure glaucoma).
Ask your doctor or pharmacist to answer any questions you may have.
The following is a list of possible side effects. Do not be alarmed by this list.
You may not experience any of them.
Tell your doctor or pharmacist if you notice any of the following and they worry you:
feeling light-headed, dizzy or faint
feeling sick (nausea) or vomiting
diarrhoea or constipation
an uncomfortable feeling in the stomach
unusual tiredness or weakness, fatigue
runny or blocked nose, or sneezing
sore throat and discomfort when swallowing (pharyngitis)
swelling of the hands, feet or ankles
urinary tract infection
skin rashes or eczema
These are common side effects. They are generally mild.
Tell your doctor as soon as possible if you notice any of the following:
skin rash or itchiness
aching, tender or weak muscles not caused by exercise
fast heart beat
shortness of breath or tightness in the chest
swelling of the hands, feet or ankles
symptoms that may indicate high potassium levels in the blood, such as nausea, diarrhoea,
muscle weakness, change in heart rhythm.
These may be serious side effects. You may need medical attention. Serious side effects
If any of the following happen, stop taking OLMESARTAN HCT - MYL and either tell your
doctor immediately or go to Accident and Emergency at your nearest hospital:
swelling of the face, lips, mouth, tongue or throat which may cause difficulty in
swallowing or breathing
These are very serious side effects. You may need urgent medical attention or hospitalisation.
These side effects are very rare.
Other side effects not listed above may occur in some patients. Tell your doctor or
pharmacist if you notice anything that is making you feel unwell.
After using OLMESARTAN HCT - MYL
Keep your tablets in the box until it is time to take them.
If you take the tablets out of the box they will not keep well.
Keep your tablets in a cool dry place where the temperature stays below 25°C.
Do not store OLMESARTAN HCT - MYL or any other medicine in the bathroom or near a
Do not leave it on a windowsill or in the car on hot days.
Heat and dampness can destroy some medicines.
Keep it where children cannot reach it.
A locked cupboard at least one-and-a-half metres above the ground is a good place
to store medicines.
If your doctor tells you to stop taking OLMESARTAN HCT - MYL or the tablets have passed
their expiry date, ask your pharmacist what to do with any that are left over.
What it looks like
OLMESARTAN HCT - MYL tablets come in three strengths and each has a different appearance:
OLMESARTAN HCT - MYL 20/12.5mg is a round tablet, approximately 8.5mm in diameter,
reddish yellow in colour with C22 debossed on one side.
OLMESARTAN HCT - MYL 40/12.5mg is an oval tablet, approximately 15mm x 7mm, reddish
yellow in colour with C23 debossed on one side.
OLMESARTAN HCT - MYL 40/25mg is an oval tablet, approximately 15mm x 7mm in diameter,
pinkish in colour with C25 debossed on one side.
The product is presented in blister packs of 10 or 30 film-coated tablets.
OLMESARTAN HCT - MYL 20/12.5 - 20mg olmesartan medoxomil and 12.5mg hydrochlorothiazide
OLMESARTAN HCT - MYL 40/12.5 - 40mg olmesartan medoxomil and 12.5mg hydrochlorothiazide
OLMESARTAN HCT - MYL 40/25 - 40mg olmesartan medoxomil and 25mg hydrochlorothiazide
and Opadry O2A22352 or Opadry O2A24576 that contain titanium dioxide, purified talc,
hypromellose and iron oxides.
OLMESARTAN HCT - MYL does not contain sucrose, tartrazine or any other azo dyes.
OLMESARTAN HCT - MYL is supplied in Australia by:
Organon Pharma Pty Ltd
Building A, 26 Talavera Road,
Macquarie Park NSW 2113
Australian Registration Numbers
OLMESARTAN HCT - MYL 20/12.5
AUST R 273576
OLMESARTAN HCT - MYL 40/12.5
AUST R 273577
OLMESARTAN HCT - MYL 40/25
AUST R 273578
This leaflet was prepared in November 2021.