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Avapro

Drug Description
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AVAPRO®
(irbesartan) Tablets

USE IN PREGNANCY

When used in pregnancy during the second and third trimesters, drugs that act directly on the renin-angiotensin system can cause injury and even death to the developing fetus. When pregnancy is detected, AVAPRO should be discontinued as soon as possible. See WARNINGS: Fetal/Neonatal Morbidity and Mortality.

DRUG DESCRIPTION

AVAPRO®* (irbesartan) is an angiotensin II receptor (AT1 subtype) antagonist.

Irbesartan is a non-peptide compound, chemically described as a 2-butyl-3-[p-(o-1H-tetrazol-5-ylphenyl)benzyl]-1,3-diazaspiro[4.4]non-1-en-4-one.

Its empirical formula is C25H28N6O, and the structural formula:

AVAPRO®  (irbesartan) Structural Formula Illustration

Irbesartan is a white to off-white crystalline powder with a molecular weight of 428.5. It is a nonpolar compound with a partition coefficient (octanol/water) of 10.1 at pH of 7.4. Irbesartan is slightly soluble in alcohol and methylene chloride and practically insoluble in water.

AVAPRO is available for oral administration in unscored tablets containing 75 mg, 150 mg, or 300 mg of irbesartan. Inactive ingredients include: lactose, microcrystalline cellulose, pregelatinized starch, croscarmellose sodium, poloxamer 188, silicon dioxide and magnesium stearate.

Brand Name: Avapro
Generic Name: Irbesartan
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