Blood Pressure Home > Cozaar

Cozaar is often prescribed for the treatment of diabetic nephropathy and high blood pressure. Although the medicine cannot cure either condition, it is effective in slowing down the progression of diabetic nephropathy and controlling high blood pressure. Cozaar comes in tablet form and is available in a number of strengths. Potential side effects include dizziness, back pain, and nasal congestion.

What Is Cozaar?

Cozaar® (losartan potassium) is a prescription medicine that has been licensed to treat several conditions related to the heart and blood vessels. It is part of a class of drugs called angiotensin II receptor blockers, or ARBs for short.

Who Makes It?

Cozaar is manufactured by Merck & Co.

What Is Cozaar Used For?

Uses of Cozaar include:
The medication is not a cure for high blood pressure or diabetic nephropathy. It has also been approved for use in children ages six and older to treat high blood pressure.
(Click Cozaar Uses for more information, including possible off-label uses.)

How Does Cozaar Work?

Cozaar is part of a class of drugs called angiotensin II receptor blockers. As the name of the drug class implies, the medication blocks angiotensin II receptors. This decreases the effectiveness of a chemical known as angiotensin II, which normally causes blood vessels to narrow (constrict). By blocking the effects of angiotensin II, Cozaar causes blood vessels to relax, which can lower blood pressure.
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Last reviewed by: Kristi Monson, PharmD;
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