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Risk of first-generation H1-antihistamines: a GA2LEN position paper

Church, M.K., Maurer M, K., Simons, F.E.R., Bindslev-Jensen, C., van Cauwenberge, P., Bousquet, J., Holgate, S.T. and Zuberbier, T. (2010) Risk of first-generation H1-antihistamines: a GA2LEN position paper Allergy, 65, (4), pp. 459-466. (doi:10.1111/j.1398-9995.2009.02325.x). (PMID:20146728).

Record type: Article

Abstract

Background: First-generation H1-antihistamines obtained without prescription are the most frequent form of self-medication for allergic diseases, coughs and colds and insomnia even though they have potentially dangerous unwanted effects which are not recognized by the general public.

Aims: To increase consumer protection by bringing to the attention of regulatory authorities, physicians and the general public the potential dangers of the indiscriminate use first-generation H1-antihistamines purchased over-the counter in the absence of appropriate medical supervision.

Methods: A GA2LEN (Global Allergy and Asthma European Network) task force assessed the unwanted side-effects and potential dangers of first-generation H1-antihistamines by reviewing the literature (Medline and Embase) and performing a media audit of US coverage from 1996 to 2008 of accidents and fatal adverse events in which these drugs were implicated.

Results: First-generation H1-antihistamines, all of which are sedating, are generally regarded as safe by laypersons and healthcare professionals because of their long-standing use. However, they reduce rapid eye movement (REM)-sleep, impair learning and reduce work efficiency. They are implicated in civil aviation, motor vehicle and boating accidents, deaths as a result of accidental or intentional overdosing in infants and young children and suicide in teenagers and adults. Some exhibit cardiotoxicity in overdose.

Conclusions: This review raises the issue of better consumer protection by recommending that older first-generation H1-antihistamines should no longer be available over-the-counter as prescription- free drugs for self-medication of allergic and other diseases now that newer second- generation nonsedating H1-antihistamines with superior risk/benefit ratios are widely available at competitive prices.

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More information

e-pub ahead of print date: 8 February 2010
Published date: April 2010
Keywords: adverse event, allergic rhinitis, cognitive function, sedation

Identifiers

Local EPrints ID: 79613
URI: http://eprints.soton.ac.uk/id/eprint/79613
ISSN: 0105-4538
PURE UUID: 8227a8d8-8f43-4db2-b590-55a0d7693628

Catalogue record

Date deposited: 17 Mar 2010
Last modified: 18 Jul 2017 23:16

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Contributors

Author: M.K. Church
Author: K. Maurer M
Author: F.E.R. Simons
Author: C. Bindslev-Jensen
Author: P. van Cauwenberge
Author: J. Bousquet
Author: S.T. Holgate
Author: T. Zuberbier

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