Adverse drug reaction
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Toxic physical or (less commonly) psychological reaction to a therapeutic agent.
The reaction may be predictable, or allergic or idiosyncratic (unpredictable).Reference: World Health Organization. Lexicon of alcohol and drug terms published by the World Health Organization. Internet. Accessed August 20, 2009. Available at http://www.who.int/substance_abuse/terminology/who_lexicon/en/index.html
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An appreciably harmful or unpleasant reaction, resulting from an intervention related to the use of a medicinal product, which predicts hazard from future administration and warrants prevention or specific treatment or alteration of the dosage regimen or withdrawal of the product.
Reference: Bandolier. EBM glossary. Internet. Accessed July 3, 2009. Available at http://www.medicine.ox.ac.uk/bandolier/glossary.html
