Concise answers when you need the essentials, with deeper clinical context and transparent source links when the decision needs more scrutiny.
Search by active ingredient or familiar medicine name.
This tablet combines an ACE inhibitor with a thiazide diuretic. It treats essential hypertension not adequately controlled by enalapril alone, or replaces the same components in someone already stabilised on them separately. It is not licensed as initial treatment.
Enfortumab vedotin is an antibody–drug conjugate that targets Nectin-4 and delivers a cell-killing agent into cancer cells. It is used for certain bladder and urothelial cancers, either with pembrolizumab or alone after specified previous treatments.
Enoxaparin sodium is a low molecular weight heparin anticoagulant given by injection. It helps prevent new blood clots and stops existing clots becoming larger.
Entacapone is a COMT inhibitor used alongside levodopa in adults with Parkinson’s disease. It prolongs levodopa’s effect and may reduce end-of-dose wearing off. It does not control symptoms when taken alone.
Entecavir is a nucleoside analogue antiviral used mainly to treat chronic hepatitis B. It reduces viral replication, helping to limit ongoing liver damage, but does not prevent transmission.
Entrectinib is an oral targeted cancer treatment that blocks abnormal kinase signals produced by certain NTRK or ROS1 gene changes. It is used only when testing confirms a relevant alteration and the cancer meets specific licensing criteria.
Enzalutamide is an anti-androgen treatment for prostate cancer. It blocks hormone signals that can help prostate cancer cells grow.
Epcoritamab is a bispecific antibody that brings T cells into contact with CD20-positive lymphoma cells so the immune system can destroy them. It is a specialist treatment for adults with certain relapsed or treatment-resistant B-cell lymphomas, given by injection under the skin.
Ephedrine hydrochloride stimulates adrenergic pathways. UK-licensed tablets prevent or relieve asthma-related bronchospasm, while injections reverse low blood pressure caused by spinal or epidural anaesthesia.
Epinastine hydrochloride is an anti-allergic eye treatment licensed in the UK for symptoms of seasonal allergic conjunctivitis, including itchy, red, watery or swollen eyes.
Eplerenone is an aldosterone-blocking treatment used alongside other treatments for certain adults with heart failure, including after some heart attacks.
Epoetin alfa is a laboratory-made version of erythropoietin, a hormone that signals bone marrow to make red blood cells. It treats selected types of symptomatic anaemia and can reduce blood transfusion needs in specific settings.
Epoetin beta is a manufactured form of erythropoietin, a hormone that stimulates bone marrow to make red blood cells. It is used to treat or prevent particular types of anaemia and is given by injection under specialist supervision.
Epoetin zeta is a biosimilar erythropoiesis-stimulating agent that acts like natural erythropoietin. It stimulates bone marrow to make red blood cells and treats selected causes of symptomatic anaemia or reduces transfusion requirements.
Epoprostenol sodium is an intravenous prostacyclin that widens blood vessels and reduces platelet aggregation. Specialist teams use it mainly for severe pulmonary arterial hypertension and, in certain emergencies, during haemodialysis when heparin is unsuitable.
Eprosartan mesilate is an angiotensin II receptor blocker that relaxes blood vessels and lowers blood pressure. The selected UK product is licensed for essential hypertension.
Eptacog alfa is a recombinant activated clotting factor VII. It helps form a clot at the bleeding site and is used under specialist supervision for certain bleeding disorders and severe bleeding after childbirth.
Eptacog beta is a recombinant activated human factor VII that helps blood clot without relying on factor VIII or IX. It is used for bleeding and around procedures in adults and adolescents with congenital haemophilia A or B and clinically important inhibitors.
Eptinezumab is a monoclonal antibody that blocks calcitonin gene-related peptide (CGRP), which contributes to migraine. It prevents migraine in eligible adults but does not treat an attack already underway.
Eravacycline is an intravenous tetracycline antibiotic licensed for complicated infections within the abdomen in adults. It is a Reserve antibiotic, generally selected by specialist teams according to likely bacteria, susceptibility results and individual circumstances.
Erdosteine is an oral mucolytic that makes thick airway mucus less viscous and easier to clear. The selected UK product is licensed as an expectorant and for symptom relief during acute worsening of chronic bronchitis in adults.
Erenumab is a fully human monoclonal antibody that blocks the calcitonin gene-related peptide (CGRP) receptor. It prevents migraine in adults but does not treat an attack that has already started.
Ergocalciferol is vitamin D2, a fat-soluble vitamin that helps regulate calcium and phosphate. The selected injection treats consequences of poor vitamin D absorption caused by gastrointestinal, liver or biliary disease.
Ergometrine maleate is an ergot alkaloid that produces strong, sustained contraction of the womb. The injection is used under medical supervision during the third stage of labour and to control bleeding after birth.
Eribulin is cytotoxic chemotherapy that disrupts cancer-cell division. It is used in adults after previous treatment for certain advanced breast cancers or liposarcomas.
Eribulin mesylate is cytotoxic chemotherapy that disrupts structures needed for cancer-cell division. It is licensed for certain adults with previously treated advanced breast cancer or unresectable liposarcoma.
An oral targeted cancer treatment that blocks EGFR signalling. It is used for selected adults with advanced non-small-cell lung cancer and, with gemcitabine, metastatic pancreatic cancer.
Ertapenem is an intravenous carbapenem antibiotic that kills susceptible bacteria. It is used for selected infections requiring parenteral treatment and is a UK Reserve antibiotic.
Ertapenem sodium is a carbapenem antibiotic given into a vein for certain serious bacterial infections caused, or likely to be caused, by susceptible bacteria.
An SGLT2 inhibitor that lowers blood glucose by increasing glucose loss in urine. It is licensed for adults with insufficiently controlled type 2 diabetes alongside diet and exercise, either when metformin is unsuitable or with other diabetes treatments.
Erythromycin is a prescription macrolide antibiotic used to prevent or treat infections caused by susceptible bacteria.
A prescription skin solution combining a topical antibiotic and a retinoid. It treats acne with blocked pores, inflamed spots or both, particularly on very oily skin.
A prescription skin solution combining the macrolide antibiotic erythromycin with zinc acetate. It treats acne vulgaris by reducing acne-associated bacterial growth, while zinc supports delivery and skin healing.
Erythromycin ethylsuccinate is an oral form of erythromycin used for infections caused by susceptible bacteria, including selected respiratory, skin, ear, eye, dental and gastrointestinal infections.
Erythromycin lactobionate is an intravenous form of the macrolide antibiotic erythromycin. It treats susceptible bacterial infections when oral treatment is not possible or sufficient.
Erythromycin stearate is an oral form of the macrolide antibiotic erythromycin. It treats or prevents infections caused by susceptible bacteria, including certain respiratory, ear, mouth, skin and soft-tissue infections.
Escitalopram is a prescription antidepressant in the selective serotonin reuptake inhibitor (SSRI) class. It is used for depression and several anxiety-related conditions, including panic disorder and obsessive-compulsive disorder.
Escitalopram oxalate is a prescription-only selective serotonin reuptake inhibitor (SSRI). Oxalate is the salt form supplying escitalopram. Selected UK products are licensed for depression and several anxiety-related disorders.
Esketamine blocks NMDA glutamate receptors. In the UK, the nasal formulation is licensed alongside other antidepressant treatment for certain adults with major depression; the injectable formulation is used by anaesthetic specialists for anaesthesia and emergency pain relief.
Eslicarbazepine acetate is an antiseizure treatment for focal-onset seizures. It may be used alone in adults with newly diagnosed epilepsy or alongside other antiseizure treatments in adults and people aged over 6 years.
Esmolol hydrochloride is a very short-acting, selective beta blocker given into a vein in hospital for rapid, closely monitored control of a fast heart rate or perioperative high blood pressure.
This combines naproxen, an anti-inflammatory painkiller, with esomeprazole, which reduces stomach acid. It is licensed for certain inflammatory joint conditions in adults at risk of NSAID-related stomach or duodenal ulcers when lower-strength anti-inflammatory treatment is insufficient. It is not intended for rapid relief of acute pain.
Estradiol is an oestrogen identical to the hormone produced by the ovaries. As systemic hormone replacement therapy (HRT), it replaces falling oestrogen levels and relieves menopausal symptoms. Selected patches are also licensed to prevent osteoporosis in certain postmenopausal women.
Estradiol hemihydrate is a form of estradiol, an oestrogen identical in action to the main oestrogen produced by the ovaries. UK products provide systemic hormone replacement therapy (HRT) through tablets, patches or gel, or local treatment through vaginal tablets.
This continuous combined HRT patch contains estradiol and the progestogen levonorgestrel. It treats oestrogen-deficiency symptoms in postmenopausal women more than one year after menopause, while levonorgestrel helps protect the womb lining.
A combined oral contraceptive containing an oestrogen and a progestogen, licensed to prevent pregnancy.
Combined hormone replacement therapy (HRT) containing estradiol to replace declining oestrogen and norethisterone acetate to protect the womb lining. It is mainly used for menopausal oestrogen-deficiency symptoms; one selected patch product is also licensed for osteoporosis prevention in specific patients.
This oral combination suppresses ovarian hormone signalling while replacing a small amount of oestrogen and progestogen. It is used for moderate to severe uterine fibroid symptoms and for endometriosis symptoms after previous medical or surgical treatment.
A continuous combined hormone replacement therapy containing estradiol and progesterone. It relieves troublesome oestrogen-deficiency symptoms after menopause in women who still have a womb.
Estradiol valerate is converted in the body to estradiol. The selected oral product is licensed as hormone replacement therapy for oestrogen-deficiency symptoms during perimenopause and after menopause.
A continuous combined hormone replacement therapy (HRT) containing an oestrogen and a progestogen. It relieves oestrogen-deficiency symptoms after menopause in women with a uterus and may help prevent osteoporosis in selected women.
Estriol is a short-acting oestrogen used inside the vagina to relieve postmenopausal dryness, irritation and discomfort caused by oestrogen deficiency. Absorption into the rest of the body is limited.
Etanercept is a biological treatment that blocks tumour necrosis factor (TNF), an immune-system signal involved in inflammation. Specialists use it for selected inflammatory joint, spinal and skin conditions.
Etelcalcetide hydrochloride is a synthetic peptide calcimimetic that reduces parathyroid hormone levels. It treats secondary hyperparathyroidism in adults with chronic kidney disease receiving haemodialysis and is administered by the dialysis team.
Ethambutol hydrochloride is an antimycobacterial antibiotic used mainly with other medicines to treat tuberculosis. It should not be used alone because resistance can develop readily.
This prescription-only tablet combines four antibiotics that act against tuberculosis bacteria in different ways. It is licensed for initial tuberculosis treatment under specialist supervision.
Ethanol for injection is a specialist hospital treatment, not a beverage. It may be injected near nerves to interrupt severe chronic pain signals or given intravenously as an antidote for acute methanol poisoning. The selected UK product is marked discontinued on eMC.
A combined hormonal contraceptive supplied as a flexible vaginal ring. It prevents pregnancy mainly by stopping ovulation and does not protect against sexually transmitted infections.
A combined oral contraceptive containing an oestrogen and a progestogen. It is mainly used to prevent pregnancy.
A combined oral contraceptive containing synthetic oestrogen and progestogen. It is mainly used to prevent pregnancy; selected products also have specific gynaecological uses.