Symptomatic hypotension may occur, especially after the 1st dose, in patients who are vol- &/or Na-depleted patients by vigorous diuretic therapy, dietary salt restriction, diarrhea or vomiting. Increased risk of severe hypotension & renal insufficiency in patients w/ bilateral renal artery stenosis or stenosis of the artery to a single functioning kidney. Renal impairment & kidney transplantation. Hypertensive patients w/ type 2 diabetes & renal disease. Dual blockade of RAAS through combined use w/ ACE inhibitors or aliskiren is not recommended. Not to be used concomitantly w/ ACE inhibitors in patients w/ diabetic nephropathy. Hyperkalaemia may occur especially in the presence of renal impairment, overt proteinuria due to diabetic renal disease, &/or heart failure. May induce hypoglycaemia in diabetic patients. Patients suffering from aortic or mitral stenosis, or obstructive hypertrophic cardiomyopathy; whose vascular tone & renal function depend predominantly on activity of the RAAS. Not recommended in patients w/ primary aldosteronism. Periodic monitoring of K & creatinine serum levels is recommended in patients w/ impaired renal function. Combination w/ lithium is not recommended. Galactose intolerance, total lactase deficiency or glucose-galactose malabsorption. May affect ability to drive & use machines. Discontinue during pregnancy. Lactation. Paed population. Black people.