Each film-coated tablet contains: Irbesartan, USP 150 mg or 300 mg.
Irbesartan is a non-peptide compound, chemically described as 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. Irbesartan is a white to off-white crystalline powder with a molecular weight of 428.2325. Irbesartan is an Angiotensin II receptor antagonist.