Hypotension may occur in patients receiving ARBs w/ activated renin-angiotensin system. Co-administration w/ agents blocking the renin-angiotensin system eg, ACE inhibitors or aliskiren. Patients w/ unilateral or bilateral renal artery stenosis, kidney impairment, recent kidney transplantation, acute hepatic impairment or biliary obstructive disorders, acute MI, CHF, severe obstructive CAD, aortic & mitral stenosis or obstructive hypertrophic cardiomyopathy. Monitor K & creatinine levels in patients w/ moderate renal impairment. Childn <18 yr.