GENERIC NAME: Telmisartan


Telmisartan is an oral antihypertensive prescription drug, belongs to a class of medications known as angiotensin receptor blockers (ARBs). It works by blocking the action of angiotensin II (a natural substance) and thereby relaxing blood vessels to flow blood smoothly and helps the heart to pump more efficiently.

It is available as the brand-name drug and generic drug. It is sold under the common brand “Micardis”. Generic drugs usually cost less.

What is Telmisartan used for?


Telmisartan is either used alone or in combination with other drugs to reduce high blood pressure.

It is prescribed to older adults who are above 55 years and at a greater risk of major heart diseases like stroke and heart attack. This drug is prescribed to patients who can not take angiotensin-converting enzyme (ACE) inhibitors.

How to use Telmisartan?

The dose of the drug is based on your medical condition and response to treatment. Take this drug orally as directed by your doctor, usually once per day with or without food.

Telmisartan comes with the medication guide read all the instruction carefully before you start taking it. If you have any problem, discuss with your doctor or pharmacist.

Take this drug regularly even if you feel well, this can help you get the maximum benefit from it. Preferably, take this drug at the same time each day to avoid confusion and missing of dose.

Take the tablet with a glass of water or other liquids. Do not crush, break, or chew it.

It may take up to 3 to 5 weeks before you get the full benefit from this drug in the treatment of high blood pressure.

Take this drug regularly even if you feel better to get the full benefit from it. Preferably take medicine at the same time each day to avoid confusion.

What are the side effects of Telmisartan?

The commonly observed side effect with this drug is dizziness or lightheadedness, sinus pain, sneezing, cough, and a runny nose, sore throat, nasal congestion and flu-like symptoms such as fever and body aches. If any of these effects remain or get worse, talk to your doctor or pharmacist immediately.

To lessen the risk of dizziness and lightheadedness, get up slowly when rising from a sitting or lying position.

Get emergency medical assistance promptly, if symptoms of hyperkalemia (high potassium blood level) occur such as a slow/irregular heartbeat, muscle weakness and feeling lethargic.

This drug very rarely causes serious kidney problems or make them worse. Inform your doctor on time, if you notice any signs of kidney problems like a change in the amount of urine tiredness and shortness of breath.

Get emergency medical assistance right away if you notice any sign or symptoms of low blood pressure such as feeling faint or dizzy, lightheadedness and tiredness.

Allergic reaction to this medicine is very rare. However, get medical help promptly if you notice any symptoms of a severe allergic reaction, such as rash, itching/swelling (face/tongue/throat), breathlessness.

This is not a full record of all possible side effects. If you mark other effects not listed above, contact your doctor or pharmacist.

What are the precautions while using Telmisartan?

Before using telmisartan, discuss with your doctor or pharmacist if you are allergic to it or if you have any other allergies.

Inform your doctor or pharmacist about medical history, especially of any liver disease, kidney problems, bile duct blockage, dehydration (severe loss of body water and minerals), hyperkalemia (high blood levels of potassium in the blood).

Telmisartan may increase your blood potassium levels. Ask your doctor before you using any medicines, supplements, or salt substitutes that contain potassium.

This drug may cause dizziness. Do not take alcoholic beverages until you have discussed with your doctor as alcohol may make the low blood pressure effect worse or increase the possibility of dizziness or fainting.

Do not take other medicines without consulting your doctor, primarily such as prescription or nonprescription (over-the-counter) medicines for asthma, colds, cough, hay fever, or sinus problems, and herbal or vitamin supplements.

The use of this medicine is not recommended during pregnancy as it may harm the fetus. Consult your doctor for further details.

It is not clear whether this drug can passes into breast milk. Consult your doctor before breastfeeding.

What are the drug interactions of Telmisartan?

Telmisartan may interact with other medications, vitamins, or herbs you may be using. A drug interaction is when a substance changes the way a drug works which can be harmful or hinder the drug from working well.

Do not start, stop, or alter the dose of the drug without consulting your doctor as your doctor may be monitoring you for possible drug interactions.

Taking angiotensin receptor blockers (losartan, valsartan, candesartan) and angiotensin-converting enzyme inhibitors (enalapril, lisinopril, captopril) with this drug may raise your risk of very low blood pressure, high blood potassium levels, and worsened kidney function.

This drug can increase the levels of digoxin in your blood. Your doctor may monitor your blood levels when you are telmisartan.

Some products may interact with telmisartan such as lithium, aliskiren and birth control pills containing drospirenone.

Some medications contain inactive ingredients that could raise your blood pressure or worsen your heart failure. Tell your doctor what products you are using, and ask how to use them safely (especially cough-and-cold products, diet aids, or NSAIDs like ibuprofen/naproxen).

This drug may cause low blood pressure, and the risk of low blood pressure is higher if you also take diuretics (water pills). Examples of diuretics include hydrochlorothiazide, furosemide, spironolactone.


High blood potassium warning:

This drug may increase your blood levels of potassium. Your doctor will check your blood potassium levels during treatment with this drug.

Risk of hypotension warning:

This drug may cause hypotension (low blood pressure). Your doctor will observe you for low blood pressure at the time of dosage changes. Inform your doctor if you have any symptoms of low blood pressure, such as dizziness or lightheadedness.


This drug must not be taken in pregnancy or if you are planning to get pregnant. Olmesartan can harm the fetus or end your pregnancy. Inform your doctor right away if you are pregnant while using this drug.

Kidney damage warnings:

Telmisartan may cause severe kidney damage especially in people with certain types of kidney damage or heart failure. Your doctor will regularly monitor your kidney function while you are taking this drug.

What are the forms and strengths of Telmisartan?

Generic: Telmisartan
Form: Oral tablet
Strengths: 20mg, 40mg, 80mg

Brand: Micardis
Form: Oral tablet
Strengths: 20mg, 40mg, 80mg

What is the dosage of Telmisartan?

For High Blood Pressure:

Adult (18 years and older):

Typical Starting Dose: 40mg once a day orally.
Maintenance Dose: 20–80mg once a day orally.

Children (0–17 years):

This medication hasn’t been studied in children and shouldn’t be used in children under the age of 18 years.

Senior dosage (65 years and older):

In older adults, the dose of the drug needs to be reduced, or given at a different schedule because older adults eliminate drugs more slowly. This causes the accumulation of medicine in the body. Your doctor may prescribe a lower dose or a different schedule if you are an older person.

For lowering the risk of a Heart attack, Stroke, or Death from Heart Disease:

Adult dosage (55 years and older):

If you are 55 years or older who cannot take angiotensin-converting enzyme (ACE) inhibitors, the typical dose starts at 80 mg once a day orally.

Adult (18–55 years):

Telmisartan is not prescribed in this age group.

Children (0–17 years):

The use of this drug is not adviced in children below 18 years of age as safety and efficacy have not been established.

Senior dosage (65 years and older):

In older adults, the dose of the drug needs to be reduced, or given at a different schedule because older adults eliminate drugs more slowly. This causes the accumulation of medicine in the body. Your doctor may keep you on a lower dose if you are an older person.

Special Dosage Considerations:

Liver impairment: People with liver disease may have reduced the ability to clear this drug from the body. If you have liver disease, avoid taking this medication. Your doctor may prescribe you a lower dose initially and increase the dose gradually.

Most common questions asked about Telmisartan / Q&A’s:

What are the symptoms of Telmisartan overdose?

Telmisartan overdose symptoms may include dizziness, fainting, fast or slow heartbeat. Seek a medical emergency at the earliest if you experience any of these symptoms.


TheMedPharma has made every effort to make sure that all the information is factually correct, comprehensive, and up-to-date. However, this website should not be considered as a substitute for the advice, knowledge and expertise of a licensed healthcare professional. You should always consult your doctor or licensed health care professional before taking any medication. The drug information contained herein is subjected to changes if required. The lack of warnings or other information for a given drug does not mean that the drug or its combination is safe, effective or appropriate for use in all patients.