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Ganirelix is a GnRH antagonist used during assisted reproduction, including IVF. It temporarily suppresses reproductive hormones to help prevent eggs being released before planned collection.
Ganirelix acetate is a gonadotrophin-releasing hormone (GnRH) antagonist used during assisted reproduction, including IVF. It temporarily suppresses the hormone surge that could release eggs before planned maturation and collection.
Gefapixant citrate is a P2X3 receptor antagonist licensed for adults with chronic cough that persists despite treatment or has no identified cause.
Gefitinib is an EGFR tyrosine kinase inhibitor for adults with locally advanced or metastatic non-small-cell lung cancer whose tumour has an activating EGFR mutation.
Gemcitabine hydrochloride is cytotoxic chemotherapy that interferes with DNA production in dividing cells. It is used alone or with other anticancer treatments for several advanced or metastatic solid tumours.
Gemfibrozil is a fibrate that changes how the body handles triglyceride-rich particles and other blood lipids. It is used alongside diet and lifestyle measures for severe hypertriglyceridaemia or certain cholesterol disorders when a statin is unsuitable.
Gemtuzumab ozogamicin is an antibody–drug conjugate that targets CD33-positive leukaemia cells. It is licensed with daunorubicin and cytarabine for certain people aged 15 years and over with newly diagnosed acute myeloid leukaemia (AML).
Gentamicin sulfate is an aminoglycoside antibiotic used mainly for serious infections caused by susceptible bacteria. Systemic treatment is usually given in hospital, while eye and ear drops treat or prevent selected local infections.
This prescription ear preparation combines gentamicin, an aminoglycoside antibiotic, with hydrocortisone acetate, a corticosteroid that reduces inflammation. It treats selected bacterial and eczematous outer-ear conditions and certain surgical ear cavities.
Gilteritinib fumarate is a targeted anticancer treatment called a protein kinase inhibitor. It is used alone for adults whose FLT3-mutated acute myeloid leukaemia has returned or has not responded to previous treatment.
Givosiran sodium is a liver-targeted small interfering RNA treatment for acute hepatic porphyria. It reduces production of harmful haem precursors linked to attacks and other disease manifestations.
Glasdegib maleate is a targeted anticancer treatment that blocks Hedgehog signalling. In the UK, it is licensed with low-dose cytarabine for adults with newly diagnosed acute myeloid leukaemia who are not candidates for standard induction chemotherapy.
Glatiramer acetate is an immunomodulating treatment for relapsing forms of multiple sclerosis. It aims to reduce future relapses rather than relieve an attack already happening.
Glecaprevir + pibrentasvir combines two direct-acting antivirals that block hepatitis C virus replication. It is used under specialist supervision to treat chronic hepatitis C in adults and children aged 3 years and older.
Glibenclamide is a sulphonylurea that helps pancreatic beta cells release insulin. The selected UK product is licensed for neonatal diabetes in newborns, infants and children, particularly where certain genetic changes affect beta-cell potassium channels or cause transient neonatal diabetes.
Gliclazide is a sulfonylurea medicine that lowers blood glucose by increasing insulin release from the pancreas. It is licensed for adults with type 2 diabetes when lifestyle measures alone do not provide adequate control.
Glimepiride is an oral sulphonylurea that lowers blood glucose by increasing insulin release from the pancreas. It is licensed for type 2 diabetes when lifestyle measures alone have not provided adequate control.
Glipizide is a sulfonylurea that lowers blood glucose by increasing insulin release from the pancreas. The selected UK product is licensed for adults with type 2 diabetes alongside diet and exercise.
Glofitamab is a bispecific monoclonal antibody that helps T cells recognise and destroy CD20-bearing B cells. It is used in adults with relapsed or refractory diffuse large B-cell lymphoma in specified licensed settings.
Glucagon is a hormone that raises blood glucose by releasing glucose stored in the liver. It is mainly used as emergency treatment for severe hypoglycaemia in insulin-treated adults and children who cannot safely take sugar by mouth. Medical professionals may also use it to reduce gut movement during certain investigations.
Glucose is a simple sugar and the body’s main readily available energy source. Concentrated intravenous glucose is used in hospital to restore low blood glucose and in selected emergencies or nutritional support.
This is a balanced electrolyte and glucose solution given directly into a vein. It replaces fluid, supplies carbohydrate and can help correct mild to moderate metabolic acidosis.
A premixed intravenous fluid containing glucose, potassium, sodium and chloride. It replaces fluid and electrolytes while providing an energy source.
Glucose + sodium chloride is an intravenous fluid containing water, salt and glucose. It is used when water, electrolytes and carbohydrate are needed but adequate intake by a normal route is restricted.
Glucose monohydrate is a simple sugar used in intravenous solutions for carbohydrate and fluid support and as a vehicle for compatible intravenous medicines.
A glucose-containing intravenous fluid supplying sodium, potassium, magnesium, chloride and acetate. It is used when normal intake does not provide enough water, carbohydrate or electrolytes.
This intravenous solution contains potassium, chloride and glucose. It is used to prevent or correct potassium deficiency while providing a basic source of energy.
An intravenous solution containing glucose and the electrolytes potassium, sodium and chloride. It is used in hospital to restore or maintain fluid and electrolyte balance when an energy source is also needed.
An intravenous solution containing glucose, sodium chloride and water. Selected products replace fluid and electrolytes while providing carbohydrate; licensed uses differ by formulation.
Concentrated glucose is given into a vein by healthcare professionals. It raises blood glucose and supplies carbohydrate energy, including in parenteral nutrition. Selected products are also licensed for temporary relief in hypoglycaemic coma and increased intracranial pressure.
Glycerol soothes an irritated throat in oral cough syrups. In suppositories, it softens and lubricates stool while stimulating the lower bowel.
A soothing oral solution for irritating, tickly dry coughs and sore throats. It coats irritated throat surfaces rather than treating the underlying cause.
Glycerol + sucrose is a soothing oral syrup for irritating, tickly dry coughs and sore throats. It coats and moistens irritated throat tissues, relieving symptoms rather than treating the underlying cause.
Glycerol phenylbutyrate is a nitrogen-binding treatment for adults and children with certain urea cycle disorders. It supports long-term ammonia control when dietary protein restriction and supplements are insufficient. It does not treat an acute ammonia crisis.
Glyceryl trinitrate (GTN) widens blood vessels and relaxes smooth muscle. It is used for angina; selected products treat chronic anal-fissure pain or provide monitored cardiovascular treatment in hospital.
A three-component inhaled controller containing two long-acting bronchodilators and an inhaled corticosteroid. It is used for selected adults whose asthma remains inadequately controlled despite combination inhaled treatment and who have had a recent exacerbation.
This inhaler combines two long-acting bronchodilators. It is licensed to relieve COPD symptoms in adults as maintenance treatment and is not a rescue inhaler.
An injectable combination used after anaesthesia to reverse residual muscle relaxation caused by certain non-depolarising neuromuscular blockers. Neostigmine restores nerve-to-muscle signalling, while glycopyrronium limits effects such as a slow heart rate and excessive saliva.
Golimumab is a biological treatment that blocks tumour necrosis factor alpha, a protein involved in inflammation. Specialists use it for certain inflammatory joint, spinal and bowel conditions.
Gonadorelin hydrochloride is a synthetic form of gonadotrophin-releasing hormone. It is used in a supervised diagnostic test to assess pituitary release of luteinising hormone and follicle-stimulating hormone.
Goserelin acetate is a gonadotrophin-releasing hormone agonist supplied as a biodegradable implant. It suppresses testosterone or oestrogen and is used mainly for hormone-sensitive prostate or breast cancer, with selected uses in gynaecology and assisted reproduction.
Gozetotide is a diagnostic radiopharmaceutical used with gallium-68 for PET imaging. It helps locate prostate cancer lesions that express prostate-specific membrane antigen (PSMA); it does not treat cancer.
Granisetron is an anti-sickness treatment that blocks serotonin 5-HT3 receptors involved in vomiting. The selected skin patch is licensed for adults receiving multi-day chemotherapy when swallowing anti-sickness tablets is difficult.
Granisetron hydrochloride is a 5-HT3 receptor antagonist used mainly to prevent or treat nausea and vomiting associated with cancer chemotherapy or radiotherapy. The injectable form is also licensed around surgery.
Grass pollen allergen extract is a standardised diagnostic preparation used during skin-prick testing. It helps identify sensitisation associated with specific IgE-mediated grass pollen allergy; it does not treat or desensitise the allergy.
Griseofulvin is a prescription antifungal taken by mouth. It treats dermatophyte infections of the skin, scalp, hair or nails when topical treatment is unsuitable or has not worked.
This oral cough syrup combines an expectorant with levomenthol. Guaifenesin loosens and thins bronchial secretions so they are easier to cough up, while levomenthol provides a cooling sensation and may ease congestion.
This combination treats several cold and flu symptoms at once. Paracetamol relieves pain and fever, phenylephrine reduces nasal congestion, and guaifenesin loosens mucus in a chesty cough.
This combination contains an expectorant and an oral decongestant. It temporarily relieves a mucus-producing cough with blocked nasal or sinus passages.
Guanfacine hydrochloride is a non-stimulant ADHD treatment. In the UK, prolonged-release guanfacine is licensed for children and adolescents aged 6–17 years when stimulants are unsuitable, not tolerated or ineffective, as part of wider ADHD care.
Guselkumab is a biologic monoclonal antibody that blocks interleukin-23, a protein involved in inflammation. Selected UK products are licensed for adults with plaque psoriasis, psoriatic arthritis, Crohn’s disease or ulcerative colitis when relevant criteria are met.
Haloperidol decanoate is a long-acting first-generation antipsychotic injection licensed for maintenance treatment of schizophrenia and schizoaffective disorder in adults already stabilised with oral haloperidol.
Heparin calcium is an injectable unfractionated heparin anticoagulant. It helps prevent existing clots from enlarging and reduces new clot formation.
Heparin sodium reduces the blood’s ability to clot. Depending on the product, it can prevent or treat blood clots, prevent clotting during procedures such as haemodialysis, or keep intravenous devices open.
Heparinoid is a topical, heparin-like anticoagulant with local anti-inflammatory effects. It is used for superficial thrombophlebitis, bruising and haematoma.
A non-live vaccine that stimulates immunity against hepatitis A and hepatitis B. It is licensed for non-immune children and adolescents aged 1 to 15 years who need protection against both infections, where hepatitis B exposure risk is relatively low while immunity develops.
An inactivated vaccine that trains the immune system to recognise hepatitis A virus. It is mainly used for people at increased risk of infection, transmission or serious illness.
A combined, non-live vaccine containing inactivated hepatitis A virus antigen and recombinant hepatitis B surface antigen. It is used for people who are not immune and are at risk of both infections.
Hepatitis B immunoglobulin is a human plasma-derived antibody preparation that provides rapid, temporary protection against hepatitis B. It is usually used after significant exposure or for selected people not yet protected by vaccination.
A recombinant, adjuvanted hepatitis B vaccine for people aged 15 years and over with renal insufficiency. It helps develop antibodies against hepatitis B virus but cannot treat an existing infection.