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ACE Inhibitor / HFrEF Pregnancy: Not recommended during the first trimester and contraindicated during the second and third trimesters. Exposure from the second trimester induces human fetotoxicity (decreased renal function, oligohydramnios, skull ossification retardation) and neonatal toxicity (renal failure, hypotension, hyperkalaemia); stop treatment immediately when pregnancy is diagnosed and start alternative therapy. Not recommended during breast-feeding as no information is available (§4.6).

Lisinopril (HFrEF / Post-MI)

Brand names: Zestril, Carace

Used in: Hypertension

Lisinopril is a long-acting ACE inhibitor used for hypertension, chronic heart failure and the early management of haemodynamically stable patients after myocardial infarction.

Auto-extracted from the source labelling — not yet independently clinician-verified. These values were distilled from the UK SPC (or the US label where noted) but have not had a clinician sign-off. Confirm against the current SmPC before prescribing.

Adult dose

Dose: Heart failure: starting dose 2.5 mg once daily, administered under medical supervision to determine the initial effect on blood pressure, then increased by increments of no greater than 10 mg at intervals of no less than 2 weeks to the highest dose tolerated. Acute myocardial infarction: first dose 5 mg orally (may be started within 24 hours of symptom onset), followed by 5 mg after 24 hours, 10 mg after 48 hours, then 10 mg once daily as the maintenance dose.
Route: Oral
Frequency: Once daily, at approximately the same time each day
Max: 35 mg once daily in heart failure. (For hypertension the maximum dose used in long-term controlled clinical trials was 80 mg/day.)
eMC source: Lisinopril 1 mg/ml oral solution. Heart failure: use as adjunctive therapy to diuretics and, where appropriate, digitalis or beta-blockers; patients at high risk of symptomatic hypotension (salt depletion with or without hyponatraemia, hypovolaemia, or vigorous diuretic therapy) should have these conditions corrected if possible before starting, and renal function and serum potassium should be monitored. Dose adjustment should be based on the clinical response of the individual patient. Acute MI: patients should receive standard recommended treatments such as thrombolytics, aspirin and beta-blockers; do not start if systolic blood pressure is lower than 100 mmHg, and do not initiate in patients at risk of further serious haemodynamic deterioration after a vasodilator or in cardiogenic shock. Patients with systolic blood pressure of 120 mmHg or less at initiation or during the first 3 days after infarction should be given 2.5 mg. If hypotension occurs (systolic blood pressure <=100 mmHg) a daily maintenance dose of 5 mg may be given, with temporary reductions to 2.5 mg if needed; if prolonged hypotension occurs (systolic blood pressure <90 mmHg for more than 1 hour) lisinopril should be withdrawn. Treatment should continue for 6 weeks and the patient then re-evaluated; patients who develop symptoms of heart failure should continue treatment. Absorption is not affected by food. Other indications on the same label: hypertension — usual starting dose 10 mg (2.5-5 mg where the renin-angiotensin-aldosterone system is strongly activated, or 5 mg if a diuretic cannot be discontinued; if possible stop the diuretic 2-3 days before starting), usual effective maintenance 20 mg once daily; renal complications of type 2 diabetes with incipient nephropathy — 10 mg once daily, increased to 20 mg once daily if needed. Elderly: no age-related change in efficacy or safety, but where advanced age is associated with decreased renal function use the renal starting-dose table. Not recommended in patients with recent kidney transplantation. Paediatric use on this label is limited to hypertension in children aged 6-16 years: initial 2.5 mg once daily for 20 to <50 kg and 5 mg once daily for >=50 kg, individually adjusted to a maximum of 20 mg daily (20 to <50 kg) or 40 mg daily (>=50 kg); doses above 0.61 mg/kg or in excess of 40 mg have not been studied. Lisinopril is not recommended in children for indications other than hypertension, nor below 6 years of age, nor in children with severe renal impairment (GFR <30 ml/min/1.73 m2); in children with decreased renal function a lower starting dose or increased dosing interval should be considered.

Dose adjustments

Renal

Starting dose by creatinine clearance: less than 10 ml/min (including patients on dialysis) — 2.5 mg/day; 10-30 ml/min — 2.5-5 mg/day; 31-80 ml/min — 5-10 mg/day. Dosage and/or frequency should then be adjusted according to blood pressure response and may be titrated upward until blood pressure is controlled, to a maximum of 40 mg daily. In renal impairment (creatinine clearance <80 ml/min) the initial dose in acute MI and in diabetic nephropathy should also be adjusted according to this table (§4.2).

Dose auto-extracted from UK Summary of Product Characteristics (SPC) via the eMC — not yet clinician-verified. Always confirm against the product SmPC and your local formulary before prescribing.

US labelling (FDA)

Reference — US labelling, may differ from UK

DOSAGE AND ADMINISTRATION Lisinopril monotherapy is an effective treatment of hypertension in once-daily doses of 10 mg to 80 mg, while hydrochlorothiazide monotherapy is effective in doses of 12.5 mg to 50 mg per day. In clinical trials of lisinopril/hydrochlorothiazide combination therapy using lisinopril doses of 10 mg to 80 mg and hydrochlorothiazide doses of 6.25 mg to 50 mg, the antihypertensive response rates generally increased with increasing dose of either component. The side effects (see WARNINGS ) of lisinopril are generally rare and apparently independent of dose; those of hydrochlorothiazide are a mixture of dose-dependent phenomena (primarily hypokalemia) and dose-independent …

Source: US FDA prescribing information (openFDA / DailyMed), label dated 2023-06-29. Accessed 2026-06-12. US dosing and indications can differ from UK practice — use UK sources for prescribing decisions.

Contraindications

  • Hypersensitivity to lisinopril, to any of the excipients, or to any other ACE inhibitor (§4.3)
  • History of angioedema associated with previous ACE inhibitor therapy; hereditary or idiopathic angioedema (§4.3)
  • Concomitant use with sacubitril/valsartan therapy — lisinopril must not be initiated earlier than 36 hours after the last dose of sacubitril/valsartan (§4.3)
  • Second and third trimesters of pregnancy (§4.3)
  • Concomitant use with aliskiren-containing products in patients with diabetes mellitus or renal impairment (GFR <60 ml/min/1.73 m2) (§4.3)

Side effects

  • Dizziness and headache (common)
  • Cough (common)
  • Orthostatic effects including hypotension (common)
  • Diarrhoea and vomiting (common); nausea, abdominal pain and indigestion (uncommon)
  • Renal dysfunction (common); hyperkalaemia and increases in blood urea and serum creatinine (uncommon); angioneurotic oedema of the face, extremities, lips, tongue, glottis and/or larynx (rare); acute renal failure (rare)

Interactions

  • Sacubitril/valsartan — concomitant use is contraindicated; allow at least 36 hours after the last sacubitril/valsartan dose before initiating lisinopril (§4.3)
  • Aliskiren-containing products — contraindicated in patients with diabetes mellitus or renal impairment (GFR <60 ml/min/1.73 m2) (§4.3)
  • Diuretics — symptomatic hypotension is more likely at initiation in diuretic-treated patients; if possible discontinue the diuretic 2 to 3 days beforehand, otherwise initiate at 5 mg and monitor renal function and serum potassium (§4.2). §4.5 itself was not retrieved in this bundle.

Clinical monograph

How it works

It inhibits angiotensin-converting enzyme, reducing formation of angiotensin II and aldosterone, which lowers vasoconstriction and sodium/water retention.

Prescribing in practice

  • Check renal function and potassium before starting and after each dose increase, and watch for first-dose hypotension—particularly in patients already taking a diuretic or who are volume-depleted.
  • Dry cough and, rarely, angioedema can occur; hyperkalaemia is a recognised risk, especially with other agents that raise potassium.
  • Avoid in pregnancy and in bilateral renal artery stenosis; use caution in significant renal impairment and with concurrent potassium-sparing agents.

Monitoring

Monitor renal function, serum potassium and blood pressure before starting, after dose changes and periodically thereafter; review more closely in heart failure, renal impairment or during intercurrent illness.

Counselling the patient

  • Report a persistent dry cough, or any swelling of the face, lips, tongue or throat—seek urgent medical help for swelling.
  • Avoid potassium-based salt substitutes, and take care when standing up quickly as the first doses may cause dizziness.

Evidence & guidelines

Guideline-recommended for hypertension, heart failure and post-MI care (NICE NG136, NG106, NG185).

Reference: SOLVD Trial; GISSI-3 Trial; ESC HF Guidelines 2021; NICE NG106; SPC Zestril; Drug verified in RxNorm (NLM); confirm dosing against the manufacturer SPC (eMC). Verify against your local formulary and current prescribing references before prescribing. The structured dose values shown have been reviewed by a clinician. Monograph status: clinician-reviewed (2026-07-04).

Related

Curated clinical cross-links plus same-class fallbacks.