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Fosinopril oral

Updated 2 Feb 2023 | ACE inhibitors


Oral formulations of fosinopril.

Drugs List

  • fosinopril 10mg tablets
  • fosinopril 20mg tablets
  • Therapeutic Indications


    Treatment of cardiac failure (adjunct)

    Cardiac failure in combination with a diuretic

    Hypertension (as monotherapy or combination therapy with other antihypertensive agents)



    Hypertensive patients:
    10 to 40 mg per day as a single dose. The usual starting dose is 10mg daily.

    Dose may need adjustment after 4 weeks depending on blood pressure response.

    There is no additional blood pressure lowering action with doses over 40 mg per day. If these doses are insufficient a diuretic may be added to the treatment.

    Combination therapy with a diuretic:
    To reduce the risk of an excessive hypotensive response the diuretic should be discontinued for several days prior to initiation of fosinopril therapy. For patients in whom diuretic therapy cannot be discontinued, some manufacturers recommend fosinopril may be initiated with a dose of 5 mg daily.

    Cardiac failure in conjunction with a diuretic:
    10 mg daily initial dose, given under close medical supervision. If well tolerated the dose may be titrated up to 40 mg daily.


    (See Dosage; Adults)


    Children under 18 years
    Within 36 hours of discontinuing a sacubitril containing product
    Cardiogenic shock
    Haemodialysis with high flux membranes
    Hereditary angioneurotic oedema
    Idiopathic angioneurotic oedema
    Renal artery stenosis

    Precautions and Warnings

    Desensitisation therapy
    Aortic stenosis
    Cerebral ischaemia
    Collagen vascular disease
    Diabetes mellitus
    Glucose-galactose malabsorption syndrome
    Hepatic impairment
    History of angioedema
    Hypertrophic cardiomyopathy
    Lactose intolerance
    Left ventricular outflow obstruction
    Mitral stenosis
    Peripheral vascular disease
    Renal dialysis
    Renal impairment
    Renovascular disorder

    Adjustment of hypoglycaemic therapy may be necessary in diabetes mellitus
    Anaphylaxis possible with concomitant hyposensitisation to wasp/bee venom
    Advise ability to drive/operate machinery may be affected by side effects
    Advise patient that first dose hypotension may occur
    Afro-Caribbean or black patients may show reduced response
    Consider stopping diuretic 2-3 days prior to therapy if appropriate
    Correct volume and/or salt depletion before initiating therapy
    Exclude renovascular disorder before treatment
    Contains lactose
    Place patient in supine position if severe hypotension occurs
    Evaluate renal function before and during treatment
    Monitor serum electrolytes before and during treatment
    Consider monitoring white blood cell counts in collagen vascular disease
    Monitor blood pressure regularly
    Monitor patients with renovascular disease
    Monitor serum potassium regularly
    Profound hypotension can occur,especially after initial dose-monitor
    Reduce dose/discontinue if serum creatinine or blood urea increases
    Advise patients at risk of neutropenia to report any signs of infection
    Higher incidence of angioedema in black patients
    Increased risk of hyperkalaemia with K+ suppl. and K+ sparing diuretic
    Discontinue before parathyroid function tests
    May affect results of some laboratory tests
    Discontinue treatment 24 hours prior to surgery
    Withdraw before apheresis
    Withdraw before desensitisation
    Advise patient to seek advice at first indications of pregnancy
    Discontinue at first signs of jaundice,cholestasis,hepatitis
    Discontinue immediately if angioedema of the tongue/glottis/larynx occurs
    Discontinue or reduce dose if renal impairment worsens
    Advise patient not to take NSAIDs unless advised by clinician
    Avoid antacids within 2 hours of dose
    Hypotensive effects may be potentiated by alcohol
    Advise on problems of salt substitutes/high intake of potassium-rich food
    Female: Ensure adequate contraception during treatment

    Initiate treatment in hospital for patients with severe cardiac failure (NYHA IV) and those at high risk of first dose hypotension e.g. those on multiple or high dose diuretics, hypovolaemia, hyponatraemia (serum sodium below 130 meq/l), pre-existing hypotension (systolic BP below 90 mmHg), unstable cardiac failure and those on high dose vasodilator therapy.

    Pregnancy and Lactation


    The use of fosinopril during pregnancy is contraindicated.

    The use of fosinopril during the first trimester is not recommended. There is limited data regarding fosinopril use during pregnancy, however, foetal toxicity should be similar to that seen with other ACE inhibitors. Foetal hypocalvaria and severe renal defects have been observed when these agents have been administered during the second and third trimesters. The cause of this toxicity is thought to be related to foetal hypotension and decreased renal blood flow. Fosinopril prevents the conversion of angiotensin l to angiotensin ll and this can lead to in utero renal failure. As the primary method of removal of this drug is via the kidneys, impairment of this system in the newborn prevents elimination of fosinopril which in turn leads to prolonged hypotension.

    ACE inhibitors are contraindicated during the second and third trimesters of pregnancy as exposure during these trimesters is known to induce human foetal toxicity (renal dysfunction, oligohydramnios, pulmonary hypoplasia, patent ductus arteriosus, delay in skull ossification, neonatal toxicity and even death). Severe and sometimes fatal anuria in the foetus and in the newborn have been observed and is thought to be caused by the compromise of the foetal renal system. Foetal renal failure resulting from in utero exposure to ACE inhibitors has been reported where dialysis has been required shortly after birth. Evidence of a risk of teratogenicity after first trimester exposure is conflicting, however, the MHRA recommends that a risk cannot be excluded. Recent data published does associate first trimester ACE inhibitor exposure with congenital CNS and cardiovascular defects. Unless treatment with an ACE inhibitor is considered absolutely essential, women who are planning to become pregnant should be switched to an alternative drug with an established safety record. If exposure has occurred in the first trimester a detailed ultrasound diagnosis is advisable. Exposure to an ACE inhibitor during pregnancy is not an indication for either invasive diagnostic procedures or termination of pregnancy. In cases involving long term prenatal therapy in the second and/ or third trimesters, the foetus should be monitored for the potential development of oligohydramnios, and foetal growth should be assessed with detailed ultrasound scans (Schaefer, 2007).

    The use of all medication in pregnancy should be avoided whenever possible; particularly in the first trimester. Non-drug treatments should also be considered. When essential, a medication with the best safety record over time should be chosen, employing the lowest effective dose for the shortest possible time. Polypharmacy should be avoided. Teratogens taken in the pre-embryonic period, often quoted as lasting until 14-17 days post-conception, are believed to have an all-or-nothing effect. Where drugs have a short half-life, and when the date of conception is certain, this may allow women to be reassured where drug exposure has occurred within this time frame. Further advice may be available from the UK National Teratology Information Service (NTIS) and through ToxBase, available via password on the internet ( ) or if this is unavailable at the backup site ( ).


    The use of fosinopril during breastfeeding is contraindicated.

    Fosinopril has been detected in human milk after a daily dose of 20 mg given for 3 days. Due to insufficient information available regarding the use of the drug during breastfeeding and the information given by the MHRA below, this drug should not be used whilst breastfeeding.

    The MHRA has stated that although ACE inhibitors are not generally recommended for use by breastfeeding mothers they are not all absolutely contraindicated and some may be prescribed if treatment is considered essential, however ACE inhibitors should not be used by breastfeeding mothers in the first few weeks after delivery because of possible profound neonatal hypotension particularly in preterm infants. The MHRA has stated that fosinopril is not recommended during breastfeeding. If ACE inhibitor therapy is considered essential for the mother the use of captopril, enalapril or quinapril may be considered when the infant is older. The infant should be carefully followed up for signs of hypotension should ACE inhibitor treatment be deemed necessary.

    Neonates, infants born prematurely, those with low birth weight, those with an unstable gastrointestinal function or who have serious illnesses may require special consideration. For any infant, if a drug is prescribed to the nursing mother, it should be at the lowest practical dose and for the shortest time. When drug administration is unavoidable and breastfeeding is to continue, minimisation of exposure of the infant to the drug may sometimes be achieved by timing the maternal doses to just after a feeding episode. Infants exposed to drugs via breast milk should be monitored for unusual signs or symptoms. Interactions between the drug received by the infant from the mother's milk and medication prescribed for the infant should also be considered, for example, when the drug given to the infant may prevent metabolism of the drug received via breast milk.
    Specialist advice is available from the UK Drugs in Lactation Advisory Service at

    Side Effects

    Accelerated erythrocyte sedimentation
    Anaphylactoid reaction
    Blood urea increased
    Cardiac arrest
    Cerebrovascular accident
    Chest pain
    Cholestatic jaundice
    Conduction disturbances
    Decrease in haematocrit
    Decreased appetite
    Dry mouth
    Ear pain
    Fulminant hepatic necrosis
    Gastro-intestinal disturbances
    Haemoglobin decrease
    Hepatic impairment
    Hypertensive crisis
    Increases in hepatic enzymes
    Memory disturbances
    Micturition disorders
    Mood changes
    Myocardial infarction
    Oral lesions
    Orthostatic hypotension
    Peripheral oedema
    Peripheral vascular disorders
    Positive anti-nuclear antibodies (not associated with SLE)
    Prostate abnormalities
    Pulmonary congestion
    Renal failure
    Serum bilirubin increased
    Serum creatinine increased
    Sexual dysfunction
    Sleep disturbances
    Taste disturbances
    Transient ischaemic attack
    Upper respiratory symptoms
    Visual disturbances
    Weight changes

    Effects on Laboratory Tests

    May cause false low measurements of serum digoxin levels with assays using the charcoal absorption method. Other kits using the antibody coated-tube method should be used instead.


    It is strongly recommended that the UK National Poisons Information Service be consulted on cases of suspected or actual overdose where there is doubt over the degree of risk or about appropriate management.

    The following number will direct the caller to the relevant local centre (0844) 892 0111

    Information may be obtained if you have access to ToxBase the primary clinical toxicology database of the National Poisons Information Service. This is available via password on the internet ( ) or if this is unavailable at the backup site ( ).

    Further Information

    Last Full Review Date: March 2013

    Reference Sources

    British National Formulary, 64th Edition (2012) Pharmaceutical Press, London.

    Drugs During Pregnancy and Lactation: Treatment Options and Risk Assessment, 2nd edition (2007) ed. Schaefer, C., Peters, P. and Miller, R. Elsevier, London.

    Drugs in Pregnancy and Lactation: A Reference Guide to Fetal and Neonatal Risk, 9th edition (2011) ed. Briggs, G., Freeman, R. and Yaffe, S. Lippincott Williams & Wilkins, Philadelphia.

    Summary of Product Characteristics: Fosinopril Sodium 10mg Tablets. Actavis UK Ltd. Revised September 2012.

    Summary of Product Characteristics: Fosinopril Sodium 20mg Tablets. Actavis UK Ltd. Revised September 2012.

    Summary of Product Characteristics: Fosinopril Sodium 10mg Tablets. Aurobindo Pharma Milpharm Ltd. Revised October 2011.

    Summary of Product Characteristics: Fosinopril Sodium 20mg Tablets. Aurobindo Pharma Milpharm Ltd. Revised October 2011.

    MHRA Drug Safety Update: Volume 2, Issue 10, May 2009.
    Last accessed: March 19, 2013.

    MHRA Drug Safety Update: Volume 1, Issue 5, December 2007
    Last accessed: March 19, 2013.

    US National Library of Medicine. Toxicology Data Network. Drugs and Lactation Database (LactMed).
    Available at:
    Fosinopril. Last revised: January 4, 2011.
    Last accessed: March 19, 2013.

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