Examples

Generic Name	Brand Name
candesartan cilexetil	Atacand
eprosartan mesylate	Teveten
irbesartan	Avapro
losartan	Cozaar, Hyzaar
olmesartan	Benicar
telmisartan	Micardis
valsartan	Diovan

How It Works

These medicines block the action of a hormone that causes blood vessels to narrow. As a result, blood vessels may relax and open up. This makes it easier for blood to flow through the vessels, which reduces blood pressure. Additionally, these drugs increase the release of sodium and water into the urine, which also lowers blood pressure.

Why It Is Used

Angiotensin II receptor blockers (ARBs) may be used alone or combined with other medicine-often a diuretic-to treat high blood pressure.

ARBs may be used by people who cannot take ACE inhibitor medicines. ACE inhibitors can cause an annoying cough. This cough may be hard for some people to live with. So doctors may prescribe an ARB instead.

Who should not take ARBs

These drugs should not be taken by women who are pregnant or may become pregnant.

People with advanced kidney failure may require regular blood tests to make sure these medicines do not reduce kidney function or raise potassium levels.

How Well It Works

Angiotensin II receptor blockers (ARBs) reduce blood pressure as effectively as angiotensin-converting enzyme (ACE) inhibitors but without some of the side effects (such as a cough) associated with ACE inhibitors.¹

Eprosartan mesylate (Teveten) is a recently approved ARB that is combined with a diuretic.

Side Effects

Side effects include:

• Diarrhea.
• Stomach problems.
• Muscle cramps.
• Back and leg pain.
• Dizziness.
• Insomnia.
• Nasal congestion.
• Sinus problems.
• Upper respiratory infection.

See Drug Reference for a full list of side effects. (Drug Reference is not available in all systems.)

What To Think About

Pregnant women should not take ARBs.

Complete the new medication information form (PDF)(What is a PDF document?) to help you understand this medication.

Citations

1. De Leeuw PW (1999). How do angiotensin II receptor antagonists affect blood pressure? American Journal of Cardiology, 84(2A): 5K–6K.