Micardis (Telmisartan) – Patient Information (UK)

Micardis is a medicine that contains telmisartan, used to treat high blood pressure and, in some people, to reduce the risk of certain cardiovascular events. This page explains what Micardis is, how it works, how the body processes it, and practical guidance on taking it safely.

What is Micardis?

Micardis is an ARB medicine. It helps relax and widen blood vessels by blocking the effects of a natural hormone called angiotensin II. By reducing blood vessel tightening, Micardis can lower blood pressure and reduce strain on the heart.

In the UK, telmisartan is available in different strengths and is commonly prescribed for adults who need control of blood pressure, and in certain people to reduce cardiovascular risk.

How Micardis works (mechanism of action)

Angiotensin II is part of the body’s renin–angiotensin–aldosterone system, which influences:

• Blood vessel tone (narrowing vs relaxing)
• Blood pressure
• Hormone release (including aldosterone, which affects salt and water balance)

Telmisartan blocks angiotensin II receptors (AT1 receptors). This prevents angiotensin II from causing blood vessels to tighten and helps lower blood pressure. Because it is an ARB, it does not directly inhibit angiotensin-converting enzyme (ACE), which is why it does not typically cause the cough associated with ACE inhibitors.

Pharmacokinetics: how the body absorbs and processes telmisartan

Pharmacokinetics describes how the body absorbs, distributes, metabolises, and eliminates a medicine.

• Absorption: Telmisartan is absorbed after oral dosing. The medicine can be taken with or without food.
• Time to peak effect: Peak concentrations are typically reached within a few hours after taking a dose.
• Distribution: Telmisartan is highly protein-bound in blood.
• Metabolism: It is mainly metabolised in the liver by conjugation.
• Elimination: The medicine is eliminated largely via bile into faeces; a smaller proportion is excreted in urine.
• Half-life: Telmisartan has a long terminal half-life, supporting once-daily dosing.

In people with kidney impairment, telmisartan can still be used in many cases, but clinicians will consider kidney function and may adjust monitoring. In liver impairment, dosing decisions may require extra care.

Typical uses in the UK

Micardis (telmisartan) is used for:

• Hypertension (high blood pressure): To lower blood pressure and reduce the risk of cardiovascular events.
• Cardiovascular risk reduction: In adults at increased cardiovascular risk who cannot use certain alternatives, telmisartan may be used to help lower the risk of events such as stroke or heart attack, as part of a broader treatment plan.

Your specific suitability depends on your medical history, current blood pressure readings, overall cardiovascular risk, and other medicines you take.

How and when to take Micardis

Timing

• Once daily: Micardis is typically taken once per day. Choose a time that is easy to remember.
• Consistency matters: Taking it around the same time each day helps maintain steady control.

With or without food

Micardis can be taken with or without food. Food may slightly affect absorption in some people, but this usually does not require routine dose changes.

If you miss a dose

• If you forget a dose, take it when you remember on the same day.
• If it is almost time for the next dose, skip the missed dose and continue as normal.
• Do not take a double dose to make up for the missed tablet.

Starting treatment and expected response

Some blood pressure lowering may be noticed within the first days, but the full effect can take several weeks. It is common for clinicians to review blood pressure and blood test results after starting or changing dose.

Food interactions and what to watch for

There are no major food restrictions for telmisartan in most people. However, general advice for high blood pressure still applies:

• Maintain a balanced diet and follow any salt reduction advice given by your healthcare professional.
• Avoid excessive licorice (including some herbal products). Licorice can raise blood pressure in some people.

If you have kidney disease, heart failure, or low sodium/potassium issues, your clinician may recommend specific dietary adjustments. Always follow those plans rather than relying on general web advice.

Alcohol and medicine interactions

Alcohol can worsen low blood pressure and may increase dizziness, particularly when starting treatment or increasing dose. Telmisartan itself does not have a special “direct” alcohol interaction in the way some medicines do, but the combination can be harder on circulation.

• Be cautious: Limit alcohol, especially during the first week or after a dose change.
• Rise slowly: If you feel light-headed, stand up slowly from sitting or lying positions.
• Seek advice: If dizziness is severe or you faint, contact urgent medical advice.

Medicine interactions: important examples

Tell your pharmacist or prescriber about all medicines and supplements you use, including over-the-counter products. Some combinations can affect kidney function, potassium levels, or blood pressure.

Medicines that can raise potassium

Telmisartan can increase potassium levels. The following may add to that effect:

• Potassium supplements
• Potassium-containing salt substitutes
• Potassium-sparing diuretics (e.g., spironolactone, eplerenone)
• Some other medicines that affect potassium (your clinician can advise)

“Triple whammy” risk with kidney function

Combining an ARB (like telmisartan) with certain other medicines can sometimes increase the risk of kidney problems, especially if you are dehydrated. This risk is most associated with:

• an ARB (telmisartan) +
• a diuretic (water tablet) +
• an NSAID (painkiller such as ibuprofen or naproxen)

If you need an NSAID for pain, discuss options with a healthcare professional, particularly if you have kidney disease, are older, have diabetes, or are dehydrated.

Other blood pressure medicines

Combining telmisartan with other medicines that lower blood pressure can increase the chance of dizziness or low blood pressure. This may be appropriate when carefully monitored, but the dose plan matters.

Interaction examples to discuss

• Diuretics (including loop/thiazide): may increase risk of low blood pressure at start.
• NSAIDs (ibuprofen, diclofenac, naproxen): may reduce kidney function in some patients when combined.
• Lithium: can interact with ARBs; monitoring is often needed.
• Aliskiren: sometimes used for blood pressure; suitability depends on your case.

This is not a complete list. Your pharmacist can help check your specific medicines for interactions.

Indications and who might benefit

Telmisartan is commonly considered for adults who need blood pressure treatment and, in certain cases, who are at higher cardiovascular risk.

• Hypertension: recommended when lifestyle measures alone are not sufficient.
• Cardiovascular risk reduction: may be considered for patients with established cardiovascular disease or risk factors, depending on local clinical guidance and individual circumstances.

Decisions about suitability also take into account kidney function, potassium levels, and tolerance of previous medicines.

Dosing: general guidance

Dosing varies by individual. Always follow the dose instructions provided with your medicine. Below are common dosing patterns to help you understand what your clinician may prescribe.

• Hypertension: Treatment often begins with a standard starting dose once daily. The dose may be increased based on your blood pressure response and tolerability.
• Cardiovascular risk reduction: Telmisartan may be given once daily at a dose aimed at reducing risk, as advised by your clinician.

If you have kidney or liver impairment, your clinician may choose a different starting approach and may arrange blood tests more frequently. Never adjust the dose on your own.

Safety profile: side effects and warnings

Common side effects

Most people tolerate Micardis well. Commonly reported side effects may include:

• Dizziness or light-headedness
• Fatigue
• Low blood pressure (especially in people who are dehydrated or who start on higher doses)
• Increased potassium in blood tests

Less common but important risks

• Kidney function changes: ARBs can sometimes affect kidney function, particularly if you are dehydrated or have certain kidney conditions.
• Allergic reactions: Seek urgent help if you develop facial swelling, breathing difficulties, or severe rash.
• Electrolyte disturbances: Potassium may rise; occasionally other imbalances occur.

Serious warnings

• Pregnancy: Telmisartan must not be used in pregnancy. If pregnancy is planned or suspected, urgent medical advice is needed to switch to an appropriate alternative.
• Kidney artery narrowing (renal artery stenosis): may require close monitoring.
• Dehydration: If you are vomiting, have diarrhoea, or are unable to drink, low blood pressure and kidney issues can occur. Discuss “sick day” guidance with your healthcare professional.

Practical use tips for UK patients

• Know your numbers: Monitor blood pressure as recommended and keep a simple log (date/time and readings).
• Attend blood tests: Clinicians often check kidney function and potassium levels after starting and after dose changes.
• Stand up carefully: If you feel dizzy, avoid sudden standing and consider taking the first dose at a time when you can rest.
• Hydration matters: If you are unwell with vomiting/diarrhoea, contact healthcare advice about whether to pause certain medicines.
• Check your other products: Some medicines (including certain painkillers and supplements) can interact—ask if unsure.
• Do not stop suddenly: Micardis should generally be continued unless your clinician advises otherwise.

Alternative treatment options (for discussion with your clinician)

If Micardis is not suitable, other treatment options may include:

• Other ARBs: e.g., losartan, valsartan, irbesartan, candesartan.
• ACE inhibitors: e.g., lisinopril, enalapril (may not be suitable for people who developed ACE-inhibitor cough).
• Calcium-channel blockers: e.g., amlodipine, lercanidipine.
• Thiazide-like diuretics: e.g., indapamide, chlorthalidone (chosen based on individual factors).
• Beta blockers and other agents: depending on your cardiovascular profile and co-existing conditions.

The best alternative depends on your blood pressure goals, kidney function, potassium levels, age, other conditions, and any side effects experienced.

UK market and legal context (overview)

In the United Kingdom, medicines like telmisartan are regulated under the UK medicines framework and are supplied through regulated routes. ARBs are established therapies for hypertension and selected cardiovascular risk reduction.

Online availability is subject to applicable UK laws and pharmacy regulations. Where relevant, medicines may be supplied after appropriate checks to ensure safe use, including identity and suitability screening and compliance with dispensing rules.

Recent guidance and monitoring (UK-oriented)

National and professional guidance in the UK commonly emphasises:

• Regular blood pressure monitoring (home or clinic readings)
• Appropriate combination therapy when single-agent treatment is insufficient
• Safety monitoring for kidney function and potassium for ARBs/ACE inhibitors
• Addressing modifiable risk factors (smoking cessation, exercise, diet, weight management)

Guidance can evolve. Always follow advice from your own healthcare professional and the latest information provided by NHS and national bodies. If you are unsure about your monitoring schedule, ask your GP practice or pharmacist.

Delivery and availability

Micardis is widely available through UK pharmacies and healthcare providers. Online pharmacy availability can vary by strength and pack size.

• Stock checks: Many online pharmacies check availability before dispatch.
• Delivery times: Delivery speed may depend on location and courier service.
• Packaging: Medicines are typically supplied in original manufacturer packaging.
• Cold-chain: Telmisartan does not usually require cold storage; however, always follow the storage instructions on the pack.

If you need a specific strength (for example 20 mg, 40 mg, 80 mg or other available strengths), it is helpful to order early to avoid delays.

Frequently Asked Questions (FAQ)

1) Is Micardis the same as telmisartan?

Yes. Micardis is a brand name containing telmisartan, an angiotensin II receptor blocker (ARB).

2) How quickly will Micardis lower my blood pressure?

Some effect can be seen within days, but the full blood pressure effect often takes several weeks. Regular monitoring helps confirm how well it is working for you.

3) Can I take Micardis with food?

Yes. Micardis can be taken with or without food.

4) What should I do if I feel dizzy after starting Micardis?

Dizziness can happen, particularly soon after starting or increasing dose. Sit or lie down until you feel better, and stand up slowly. If symptoms persist or you faint, seek urgent medical advice. Contact your pharmacist or GP to review whether your dose needs adjustment.

5) Can I drink alcohol while taking Micardis?

You can generally drink alcohol in moderation, but alcohol may increase dizziness or low blood pressure. Be cautious, especially during the first week or after a dose change.

6) Does Micardis cause a cough?

Telmisartan (an ARB) is less likely to cause cough than ACE inhibitors. However, any persistent symptom should be discussed with a healthcare professional.

7) Are there any foods I must avoid?

There are no specific food restrictions for most people. If you have kidney-related concerns, your clinician may advise on salt and potassium intake. Avoid excessive licorice products unless your clinician has approved them.

8) Will Micardis affect kidney function or potassium levels?

It can. ARBs may change kidney function and raise potassium in some people, which is why blood tests are commonly performed after starting treatment or changing the dose.

9) Can I take Micardis with ibuprofen or other painkillers?

Occasional use may be possible for some people, but regular use or high doses of NSAIDs (like ibuprofen) may increase the risk of kidney problems, particularly when combined with blood pressure medicines and diuretics. Ask your pharmacist for advice specific to your situation.

10) What happens if I miss a dose?

Take it when you remember on the same day. If it is near the time of your next dose, skip the missed one. Do not take a double dose.

11) Who should not take Micardis?

Micardis is generally not suitable in pregnancy. People with certain medical conditions may need extra monitoring or may need an alternative medicine. If you have a history of allergy to telmisartan or ARBs, you should seek medical advice before use.

12) Is it safe to stop Micardis suddenly?

Do not stop without medical advice. Stopping blood pressure treatment can cause blood pressure to rise. If you experience side effects, contact your healthcare professional to discuss adjustments.

When to seek urgent medical help

Contact urgent medical services or seek immediate help if you develop:

• Signs of an allergic reaction (e.g., swelling of face/lips, breathing difficulty)
• Fainting, severe dizziness, or symptoms of very low blood pressure
• Severe weakness, confusion, or symptoms suggestive of significant electrolyte changes
• Severe chest pain, stroke symptoms (face drooping, arm weakness, speech difficulty)

Summary

Micardis (telmisartan) is an ARB medicine widely used in the UK for high blood pressure and, for some patients, cardiovascular risk reduction. It works by blocking angiotensin II receptors, helping blood vessels relax and improving blood pressure control. Most people take it once daily, with or without food. Safety monitoring—especially kidney function and potassium levels—is important, and the medicine must be avoided in pregnancy.

If you have questions about your personal situation, your pharmacist or GP can help you confirm dosing, interactions, and monitoring plans.