Hypersensitivity/angioedema; anaphylactoid reactions during LDL apheresis & desensitisation. Discontinue use if episode of unstable angina pectoris (major or not) during 1st mth of treatment; jaundice or marked hepatic enzymes elevation occur. Not to be used concomitantly w/ ARBs in patients w/ diabetic neuropathy. Not recommended in dual blockade of the renin-angiotensin-aldosterone system; primary hyperaldosteronism. Symptomatic hypotension in vol-depleted patients eg, diuretic therapy, dietary salt restriction, dialysis, diarrhoea, vomiting, severe renin-dependent HTN; ischaemic heart or cerebrovascular disease; CHF; renovascular HTN. Patients w/ mitral valve stenosis & left ventricle outflow obstruction (eg, aortic stenosis or hypertrophic cardiomyopathy); collagen vascular disease, on immunosuppressant therapy, treated w/ allopurinol or procainamide (periodically monitor WBC counts). Routine monitoring of K & creatinine. Risk factors for hyperkalemia include renal insufficiency, worsening renal function, patients >70 yr, DM, intercurrent events particularly dehydration, acute cardiac decompensation, metabolic acidosis, concomitant use of K-sparing diuretics (eg, spironolactone, eplerenone, triamterene, or amiloride), K supplements or K-containing salt substitutes, taking other drugs associated w/ increases in serum K (eg, heparin, co-trimoxazole). Closely monitor glycaemic control during 1st mth of treatment. Bilateral renal artery stenosis or artery stenosis to a solitary kidney, preexisting renal impairment. Non-productive & persistent cough. Black patients; diabetic patients. Discontinue use 1 day prior to surgery. Not to initiate sacubitril/valsartan until 36 hr after last dose. Not recommended in combination w/ lithium; K-sparing drugs, K supplements or K-containing salt substitutes, aliskiren. Concomitant use w/ NEP inhibitors (eg, racecadotril); mTOR inhibitors (eg, sirolimus, everolimus, temsirolimus); gliptins (eg, linagliptin, saxagliptin, sitagliptin, vildagliptin). Not to be taken by patients w/ galactose intolerance, glucose-galactose malabsorption or total lactase deficiency. May impair ability to drive & use machines. Renal impairment (CrCl <60 mL/min). Haemodialysis; recent kidney transplantation. Hepatic impairment & failure. Not recommended during 1st trimester of pregnancy & lactation. Not recommended in childn & adolescents <18 yr.