title: The value of reporting therapeutic ineffectiveness as an adverse drug reaction.
abstract: Therapeutic ineffectiveness is a frequent drug-related problem that can occur in a variety of different situations and be caused by different mechanisms. Examples are inappropriate use, interactions or metabolic abnormalities. Observations in patients of unexpected ineffectiveness can provide important information with regard to such situations. Therefore, ineffectiveness--especially when unexpected or unexplained--is a potentially important reportable event in pharmacovigilance. The terms regarding ineffectiveness in the WHO Adverse Reaction Terminology (WHOART) have been recently revised in order to enable optimal coding of such case reports.
authors.affiliation: The Uppsala Monitoring Centre, WHO Programme for International Drug Monitoring, Uppsala, Sweden. R.Meyboom@who-umc.org
authors.forename: R H
authors.initials: RH
authors.lastname: Meyboom
authors.forename: M
authors.initials: M
authors.lastname: Lindquist
authors.forename: A K
authors.initials: AK
authors.lastname: Flygare
authors.forename: C
authors.initials: C
authors.lastname: Biriell
authors.forename: I R
authors.initials: IR
authors.lastname: Edwards
mesh_terms: D004347:Drug Interactions; D004351:Drug Resistance; D004361:Drug Tolerance; D064420:Drug-Related Side Effects and Adverse Reactions; D006801:Humans