Not to be administered in patients w/ severe hepatic impairment, biliary cirrhotic liver & biliary obstruction-cholestasis. Dizziness & fatigue may intermittently ocur when driving & operating a machine. Not recommended in childn <18 yr. Elderly >65 yr. Amlodipine: Patients w/ CHF (NYHA class III or IV stage) or MI; aortic stenosis & mitral stenosis, obstructive cardiomyopathy. Valsartan: Discontinue immediately if angioedema (including larynx & glottis swelling) occurs. Symptomatic hypotension may occur in vol &/or salts depleted patients taking high doses of diuretics. Patients undergoing dialysis, taking diuretics, under strict salt restriction. Increased blood urea & serum creatinine in patients w/ bilateral or unilateral renal artery stenosis, or patients w/ single kidney syndrome. Hypouresis &/or progressive azotemia in patients whose renal function is dependent to activation of renin-angiotensin-aldosterone system. Kidney transplantation patients. Concomitant use w/ K adjuvant, K-sparing diuretics, salt substitute containing K or other drugs (ie, heparin). Periodically monitor K levels. Not recommended w/ concomitant therapy w/ ACE inhibitors or aliskiren; β-blocker.