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Levocetirizine (By mouth)

Treats symptoms of hay fever and hives.

What works?

Learn more about the effects of these drugs. The most reliable research is summed up for you in our featured article.

Levocetirizine is an antihistamine used to relieve the symptoms of hay fever and hives of the skin. It works by preventing the effects of a substance called histamine, which is produced by the body. Histamine can cause itching, sneezing, runny nose, and watery eyes. It can close up the bronchial tubes (air passages of the lungs) and make breathing difficult. Histamine can also cause some persons… Read more
Brand names include
Xyzal
Drug classes About this
Respiratory Agent

What works? Research summarized

Evidence reviews

Drug Class Review: Newer Antihistamines: Final Report Update 2 [Internet]

Antihistamines inhibit the effects of histamine at H1 receptors. They have a number of clinical indications including allergic conditions (e.g., rhinitis, dermatoses, atopic dermatitis, contact dermatitis, allergic conjunctivitis, hypersensitivity reactions to drugs, mild transfusion reactions, and urticaria), chronic idiopathic urticaria (CIU), motion sickness, vertigo, and insomnia.

Dementia: A NICE-SCIE Guideline on Supporting People With Dementia and Their Carers in Health and Social Care

This guideline has been developed to advise on supporting people with dementia and their carers in health and social care. The guideline recommendations have been developed by a multidisciplinary team of health and social care professionals, a person with dementia, carers and guideline methodologists after careful consideration of the best available evidence. It is intended that the guideline will be useful to practitioners and service commissioners in providing and planning high-quality care for those with dementia while also emphasising the importance of the experience of care for people with dementia and carers.

H1‐antihistamines for chronic spontaneous urticaria

Chronic spontaneous urticaria (CSU) is a condition characterised by a rash of red itchy raised weals or hives, which appear for no identifiable reason. Other names include chronic idiopathic or chronic ordinary urticaria. 'Spontaneous' differentiates this type of urticaria from 'inducible' or 'physical' urticaria, for which there are specific triggers such as cold or pressure. 'Chronic' indicates that the condition has continued for at least six weeks. Hives may be intensely itchy, and the appearance may be unsightly and distressing to sufferers. In some cases, hives can be accompanied by deeper swelling, known as angio‐oedema, which is most common around the eyes and mouth.

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Summaries for consumers

Comparing New Antihistamines

How do newer antihistamines compare in treating allergic rhinitis?

H1‐antihistamines for chronic spontaneous urticaria

Chronic spontaneous urticaria (CSU) is a condition characterised by a rash of red itchy raised weals or hives, which appear for no identifiable reason. Other names include chronic idiopathic or chronic ordinary urticaria. 'Spontaneous' differentiates this type of urticaria from 'inducible' or 'physical' urticaria, for which there are specific triggers such as cold or pressure. 'Chronic' indicates that the condition has continued for at least six weeks. Hives may be intensely itchy, and the appearance may be unsightly and distressing to sufferers. In some cases, hives can be accompanied by deeper swelling, known as angio‐oedema, which is most common around the eyes and mouth.

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