MedlinePlus Drug Information: Telmisartan

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Telmisartan

(tel mi sar' tan)

Contents of this page:
Why is this medication prescribed? How should this medicine be used? Other uses for this medicine What special precautions should I follow? What special dietary instructions should I follow? What should I do if I forget a dose?	What side effects can this medication cause? What storage conditions are needed for this medicine? In case of emergency/overdose What other information should I know? Brand names Brand names of combination products

IMPORTANT WARNING: Return to top

Do not take telmisartan if you are pregnant. If you become pregnant while taking telmisartan, call your doctor immediately. Telmisartan may harm the fetus.

Why is this medication prescribed? Return to top

Telmisartan is used alone or in combination with other medications to treat high blood pressure. Telmisartan is in a class of medications called angiotensin II receptor antagonists. It works by blocking the action of certain chemicals that tighten the blood vessels, so blood flows more smoothly.

How should this medicine be used? Return to top

Telmisartan comes as a tablet to take by mouth. It is usually taken once a day with or without food. To help you remember to take telmisartan, take it around the same time every day. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take telmisartan exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.

Your doctor may start you on a low dose of telmisartan and gradually increase your dose.

Telmisartan controls high blood pressure but does not cure it. Continue to take telmisartan even if you feel well. Do not stop taking telmisartan without talking to your doctor.

Other uses for this medicine Return to top

Telmisartan is also used sometimes to treat congestive heart failure. Talk to your doctor about the possible risks of using this medication for your condition.

This medication may be prescribed for other uses; ask your doctor or pharmacist for more information.

What special precautions should I follow? Return to top

Before taking telmisartan,

tell your doctor and pharmacist if you are allergic to telmisartan or any other medications.
tell your doctor and pharmacist what prescription and nonprescription medications, vitamins, nutritional supplements, and herbal products you are taking. Be sure to mention any of the following: anticoagulants ('blood thinners') such as warfarin (Coumadin); digoxin (Lanoxin); and diuretics ('water pills'). Your doctor may need to change the doses of your medications or monitor you carefully for side effects.
tell your doctor if you have or have ever had heart failure or kidney or liver disease.
tell your doctor if you plan to become pregnant or are breast-feeding.

What special dietary instructions should I follow? Return to top

If your doctor prescribes a low-salt or low-sodium diet, follow these directions carefully.

What should I do if I forget a dose? Return to top

Take the missed dose as soon as you remember it. However, if it is almost time for the next dose, skip the missed dose and continue your regular dosing schedule. Do not take a double dose to make up for a missed one.

What side effects can this medication cause? Return to top

Telmisartan may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:

runny nose
sore throat
back pain
sinus pain
diarrhea

Some side effects can be serious. The following symptoms are uncommon, but if you experience any of them, call your doctor immediately:

swelling of the face, throat, tongue, lips, eyes, hands, feet, ankles, or lower legs
hoarseness
difficulty breathing or swallowing
fainting

Telmisartan may cause other side effects. Call your doctor if you have any unusual problems while taking this medication.

If you experience a serious side effect, you or your doctor may send a report to the Food and Drug Administration's (FDA) MedWatch Adverse Event Reporting program online [at http://www.fda.gov/MedWatch/index.html] or by phone [1-800-332-1088].

What storage conditions are needed for this medicine? Return to top

Keep this medication in the container it came in, tightly closed, and out of reach of children. Store it at room temperature and away from excess heat and moisture (not in the bathroom). Throw away any medication that is outdated or no longer needed. Talk to your pharmacist about the proper disposal of your medication.

In case of emergency/overdose Return to top

In case of overdose, call your local poison control center at 1-800-222-1222. If the victim has collapsed or is not breathing, call local emergency services at 911.

Symptoms of overdose may include:

dizziness
fainting
rapid or pounding heartbeat

What other information should I know? Return to top

Keep all appointments with your doctor. Your blood pressure should be checked regularly to determine your response to telmisartan.

Do not let anyone else take your medication. Ask your pharmacist any questions you have about refilling your prescription.

It is important for you to keep a written list of all of the prescription and nonprescription (over-the-counter) medicines you are taking, as well as any products such as vitamins, minerals, or other dietary supplements. You should bring this list with you each time you visit a doctor or if you are admitted to a hospital. It is also important information to carry with you in case of emergencies.

Brand names Return to top

Micardis®

Brand names of combination products Return to top

Micardis® HCT (containing Telmisartan and Hydrochlorothiazide)

Last Revised - 07/01/2003
Last Reviewed - 08/01/2007

American Society of Health-System Pharmacists, Inc. Disclaimer