Patient info

Micardis 40 mg tablets – patient leaflet, side effects, dosage

Updated:
Key facts
Status:
Prescription only (POM)
Medicine strength:
40 mg
Other strengths and forms:
Contains active substance:

Patient leaflet - Micardis 40 mg tablets

1. What Micardis is and what it is used for

Micardis belongs to a class of medicines known as angiotensin II receptor blockers. Angiotensin II is a substance produced in your body which causes your blood vessels to narrow, thus increasing your blood pressure. Micardis blocks the effect of angiotensin II so that the blood vessels relax, and your blood pressure is lowered.

Micardis is used to treat essential hypertension (high blood pressure) in adults. ‘Essential’ means that the high blood pressure is not caused by any other condition.

High blood pressure, if not treated, can damage blood vessels in several organs, which could lead sometimes to heart attack, heart or kidney failure, stroke, or blindness. There are usually no symptoms of high blood pressure before damage occurs. Thus it is important to regularly measure blood pressure to verify if it is within the normal range.

Micardis is also used to reduce cardiovascular events (i.e. heart attack or stroke) in adults who are at risk because they have a reduced or blocked blood supply to the heart or legs, or have had a stroke or have high risk diabetes. Your doctor can tell you if you are at

high risk for such events.

2. What you need to know before you take Micardis

Do not take Micardis

  • if you are allergic to telmisartan or 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 Micardis in early pregnancy – see pregnancy section.)

  • if you have severe liver problems such as

    cholestasis or biliary obstruction (problems with drainage of the bile from the liver and gall bladder) or any other severe liver disease.

  • if you have diabetes or impaired kidney function

    and you are treated with a blood pressure lowering medicine containing aliskiren.

If any of the above applies to you, tell your doctor or pharmacist before taking Micardis.

Warnings and precautions

Talk to your doctor before taking Micardis if you are suffering or have ever suffered from any of the following conditions or illnesses:

  • Kidney disease or kidney transplant.
  • Renal artery stenosis (narrowing of the blood

    vessels to one or both kidneys).

  • Liver disease.
  • Heart trouble.
  • Raised aldosterone levels (water and salt retention

    in the body along with imbalance of various blood minerals).

  • Low blood pressure (hypotension), likely to occur if

    you are dehydrated (excessive loss of body water)

    or have salt deficiency due to e.g. diuretic therapy (‘water tablets’), low-salt diet, diarrhoea, or vomiting.

  • Elevated potassium levels in your blood.
  • Diabetes.

Talk to your doctor before taking Micardis:

  • if you are taking any of the following medicines

    used to treat high blood pressure:

    • 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 Micardis”.

      • if you are taking digoxin.

Talk to your doctor if you experience abdominal pain, nausea, vomiting or diarrhoea after taking Micardis. Your doctor will decide on further treatment. Do not stop taking Micardis on your own.

You must tell your doctor if you think you are (or might become) pregnant. Micardis 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).

In case of surgery or anaesthesia, you should tell your doctor that you are taking Micardis.

Micardis may be less effective in lowering the blood pressure in black patients.

Children and adolescents

The use of Micardis in children and adolescents up to

the age of 18 years is not recommended.

Other medicines and Micardis

Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines. Your doctor may need to change the dose of these other medications or take other precautions. In some cases you may have to stop taking one of the medicines. This applies especially to the medicines listed below taken at the same time with Micardis:

  • Lithium containing medicines to treat some types

    of depression.

  • Medicines that may increase blood potassium

    levels such as salt substitutes containing potassium, potassium-sparing diuretics (certain ‘water tablets’), ACE inhibitors, angiotensin II receptor blockers, NSAIDs (non steroidal anti-inflammatory medicines, e.g. aspirin or ibuprofen), heparin, immunosuppressives (e.g. cyclosporin or tacrolimus), and the antibiotic trimethoprim.

  • Diuretics (‘water tablets’), especially if taken in high

    doses together with Micardis, may lead to excessive loss of body water and low blood pressure (hypotension).

  • If you are taking an ACE-inhibitor or aliskiren

    (see also information under the headings “Do not take Micardis” and “Warnings and precautions”).

  • Digoxin.

The effect of Micardis may be reduced when you take NSAIDs (non steroidal anti-inflammatory medicines, e.g. aspirin or ibuprofen) or corticosteroids.

Micardis may increase the blood pressure lowering effect of other medicines used to treat high blood pressure or of medicines with blood pressure lowering potential (e.g. baclofen, amifostine). Furthermore, low blood pressure may be aggravated by alcohol, barbiturates, narcotics or antidepressants. You may

notice this as dizziness when standing up. You should consult with your doctor if you need to adjust the dose of your other medicine while taking Micardis.

Pregnancy and breast-feeding

Pregnancy

You must tell your doctor if you think you are (or might become) pregnant. Your doctor will normally advise you to stop taking Micardis before you become pregnant or as soon as you know you are pregnant and will advise you to take another medicine instead of Micardis. Micardis 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.

Breast-feeding

Tell your doctor if you are breast-feeding or about to start breast-feeding. Micardis 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 newborn, or was born prematurely.

Driving and using machines

Some people may experience side effects such as

fainting or a feeling of spinning (vertigo) when taking Micardis. If you experience these side effects, do not drive or operate machinery.

Micardis contains sorbitol.

This medicine contains 168.64 mg sorbitol in each tablet.

Micardis contains sodium

This medicine contains less than 1 mmol sodium (23 mg) per tablet, that is to say essentially ‘sodium-free’.

3. How to take Micardis

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

The recommended dose is one tablet a day. Try to take the tablet at the same time each day. You can take Micardis with or without food. The tablets should be swallowed whole with some water or other non-alcoholic drink. It is important that you take Micardis every day until your doctor tells you otherwise. If you have the impression that the effect of Micardis is too strong or too weak, talk

to your doctor or pharmacist.

For treatment of high blood pressure, the usual dose of Micardis for most patients is one 40 mg tablet once a day to control blood pressure over the 24-hour period. However, sometimes your doctor may recommend a lower dose of 20 mg or a higher dose of 80 mg. Alternatively, Micardis may be used in combination with diuretics (‘water tablets’) such as hydrochlorothiazide which has been shown to have an additive blood pressure lowering effect with Micardis.

For reduction of cardiovascular events, the usual dose of Micardis is one 80 mg tablet once a day. At the beginning of the preventive therapy with Micardis 80 mg, blood pressure should be frequently monitored. If your liver is not working properly, the usual dose should not exceed 40 mg once daily.

If you take more Micardis than you should

If you accidentally take too many tablets, contact your doctor, pharmacist, or your nearest hospital emergency department immediately.

I

I

t

I

f you forget to take Micardis

f you forget to take a dose, do not worry. Take it as soon as you remember then carry on as before. If you do not take your tablet on one day, ake your normal dose on the next day. Do not take a double dose to make up for forgotten individual doses.

f you have any further questions on the use of this medicine, ask your doctor or pharmacist.

4. Possible side effects

Like all medicines, this medicine can cause side

effects, although not everybody gets them.

Some side effects can be serious and need mmediate medical attention

You should see your doctor immediately if you experience any of the following symptoms:

Sepsis* (often called “blood poisoning”, s a severe infection with whole-body inflammatory esponse), rapid swelling of the skin and mucosa angioedema); these side effects are rare (may affect up to 1 in 1 000 people) but are extremely serious and patients should stop taking the medicine and see their doctor immediately. If these effects are not

i

i

r (

t

r

i

reated they could be fatal.

Possible side effects of Micardis:

Common side effects (may affect up to

1 in 10 people):

Low blood pressure (hypotension) in users treated for eduction of cardiovascular events.

Uncommon side effects (may affect up to 1 in 100 people):

Urinary tract infections, upper respiratory tract nfections (e.g. sore throat, inflamed sinuses, common cold), deficiency in red blood cells (anaemia), high potassium levels, difficulty falling asleep,

feeling sad (depression), dizziness, fainting (syncope), feeling of spinning (vertigo), slow heart rate (bradycardia), low blood pressure (hypotension) in users treated for high blood pressure, dizziness on standing up (orthostatic hypotension), shortness of breath, cough, abdominal pain, diarrhoea, pain in the belly, bloating, vomiting, itching, increased sweating, drug rash, back pain, muscle cramps, muscle pain (myalgia), kidney impairment (including acute kidney failure), pain in the chest, feeling of weakness, and increased level of creatinine in the blood.

Rare side effects (may affect up to 1 in 1 000 people): Sepsis* (often called “blood poisoning”, is a severe infection with whole-body inflammatory response which can lead to death), increase in certain white blood cells (eosinophilia),low platelet count (thrombocytopenia), severe allergic reaction (anaphylactic reaction), allergic reaction (e.g. rash, itching, difficulty breathing, wheezing, swelling of the face or low blood pressure), low blood sugar levels (in diabetic patients), feeling anxious, somnolence, impaired vision, fast heart beat (tachycardia), dry mouth, d

iscomfort in the belly, taste disturbance (dysgeusia), a

bnormal liver function (Japanese patients are more li

kely to experience this side effect), rapid swelling o

f the skin and mucosa which can also lead to death

(

angioedema including fatal outcome), eczema

(

a skin disorder), redness of skin, hives (urticaria), s

evere drug rash, joint pain (arthralgia), pain in e

xtremity, tendon pain, flu-like-illness, decreased h

aemoglobin (a blood protein), increased levels of u

ric acid, increased hepatic enzymes or creatine p

hosphokinase in the blood, low levels of sodium.

V

ery rare side effects (may affect up to

1

in 10 000 people):

P

rogressive scarring of lung tissue (interstitial lung d

isease)**.

N

ot known (frequency cannot be estimated from the a

vailable data):

I

ntestinal angioedema: a swelling in the gut p

resenting with symptoms like abdominal pain, n

ausea, vomiting, and diarrhoea has been reported a

fter the use of similar products.

*

The event may have happened by chance or could b

e related to a mechanism currently not known.

*

* Cases of progressive scarring of lung tissue have b

een reported during intake of telmisartan. However, it

is not known whether telmisartan was the cause.

R

eporting of side effects

If

you get any side effects, talk to your doctor or p

harmacist. This includes any possible side effects n

ot listed in this leaflet. You can also report side e

ffects directly (see details below). By reporting side e

ffects you can help provide more information on t

he safety of this medicine.

Y

ellow Card Scheme

W

ebsite: www.mhra.gov.uk/yellowcard or search for

M

HRA Yellow Card in the Google Play or Apple App Store

5. How to store Micardis

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 carton after “EXP”. The expiry date refers to the last day of that month.

Package leaflet: Information for the user

Micardis®

40 mg tablets

telmisartan

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 o
  • This medicine has been prescribed for you only. Do

    even if their signs of illness are the same as yours.

  • If you get any side effects talk to your doctor or pha

    listed in this leaflet. See section 4.

    r pharmacist.

    not pass it on to others. It may harm them,

    rmacist. This includes any possible side effects not

    abcd

Micardis®

40 mg tablets

telmisartan

abcd

Micardis®

40 mg tablets

telmisartan

abcd This medicine does not require any special temperature storage conditions. Store in the original package in order to protect from moisture. Remove your Micardis tablet from the blister only directly prior to intake.

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 Micardis contains

The active substance is telmisartan. Each tablet contains 40 mg telmisartan.

The other ingredients are povidone (K25), meglumin

e,

sodium hydroxide, sorbitol (E420) and magnesium stearate.

What Micardis looks like and contents of the pack

Micardis 40 mg tablets are white, oblong-shaped, and engraved with the code number ‘51H’ on one sid

e

and the company logo on the other side.

Micardis is available in blister packs containing 14, 28, 56, 84 or 98 tablets, in unit dose blister packs containing 28 × 1, 30 × 1 or 90 × 1 tablets or in multipacks containing 360 (4 packs of 90 × 1) tablets

.

Not all pack sizes may be marketed in your country.

Marketing Authorisation Holder

Boehringer Ingelheim International GmbH Binger Str. 173

55216 Ingelheim am Rhein

Germany

Manufacturer

Rottendorf Pharma GmbH

Ostenfelder Straße 51 - 61

59320 Ennigerloh

Germany

For any information about this medicine, please contact the local representative of the Marketing Authorisation Holder.

United Kingdom

Boehringer Ingelheim Ltd.

Tel: +44 1344 424 600

This leaflet was last revised in 03/2026.

About this document

Source: MHRA - Medicines and Healthcare products Regulatory Agency (products.mhra.gov.uk) · Marketing authorisation: PLGB 14598/0199

Last revision stated in the text: March 2026 · MHRA data as of 13 October 2026

Found a mistake? Tell us on the contact page.

The information on this site does not replace the advice of a doctor or pharmacist.

Facts about Micardis 40 mg tablets

Prescription needed? Yes, prescription-only medicine (POM)
Active substance Telmisartan
Strength 40 mg
Pharmaceutical form Oral tablet
White oblong tablets of 3.8 mm engraved with the code number ‘51H’ on one side and the company logo on the other side.
How is it taken Oral
Excipients Povidone (K25), Meglumine, Sodium hydroxide, Sorbitol (E420), Magnesium stearate.
Pack sizes 28 tablet
Is it available? Listed as available (NHS Dictionary of Medicines and Devices – not a record of current supplies)
Shelf life 4 years
Storage This medicinal product does not require any special temperature storage conditions. Store in the original package in order to protect from moisture.
Drug group (ATC) Angiotensin II receptor blockers (ARBs), plain
  1. C Cardiovascular system drugs
    1. C09 Agents acting on the renin-angiotensin system
      1. C09C Angiotensin II receptor blockers (ARBs), plain
        1. C09CA Angiotensin II receptor blockers (ARBs), plain
          1. C09CA07 telmisartan
Marketing authorisation PLGB 14598/0199 (first authorised 1 January 2021)
Marketing authorisation holder Boehringer Ingelheim International GmbH
Codes GTIN 5012816099548 · BNF 02050502

Sources: the MHRA product information (products.mhra.gov.uk) and the NHS Dictionary of Medicines and Devices (dm+d), release 10.2.0 of 19 October 2026, NHS Business Services Authority. Contains public sector information licensed under the Open Government Licence v3.0.