title: Adverse drug reactions reported by consumers for nervous system medications in Europe 2007 to 2011.
abstract: BACKGROUND
  Reporting of adverse drug reactions (ADRs) has traditionally been the sole province of healthcare professionals. In the European Union, more countries have allowed consumers to report ADRs directly to the regulatory agencies. The aim of this study was to characterize ADRs reported by European consumer for nervous system medications.
  
  
  METHODS
  ADRs reported by consumers for nervous system medications (ATC group N) from 2007 to 2011 and located in the European ADR database, EudraVigilance, were analysed. Data were categorized with respect to age and sex, category and seriousness of reported ADRs and medications. The unit of analysis was one ADR.
  
  
  RESULTS
  We located 4766 ADRs reported for nervous system medications, and one half of these were serious including 19 deaths. Less than 5% of ADRs were reported in children. Totally, 58% of ADRs were reported for women, 42% for men. The majority of reported ADRs were of the types "nervous system disorders" (18% of total ADRs) followed by "psychiatric disorders" (18% of total ADRs) and "general disorders" (15% of total ADRs) which also were the system organ classes in which the majority of serious ADRs were found. ADR reports encompassed medicines from the therapeutic groups: antiepileptics (ATC group N03) (36% of total ADRs), parasympathomimetics (ATC group N07) (22% of total ADRs) and antidepressants ATC group N06A (9% of total ADRs). Antiepileptics were the therapeutic group with the highest share of serious ADRs (60%) followed by antidepressants (15%). Many serious ADRs were reported for pregabalin and varenicline.
  
  
  CONCLUSIONS
  The majority of ADRs from nervous system mediations reported by consumers that were identified from the EudraVigilance database were serious. The value of consumer reports in pharmacovigilance still remains unclarified.
authors.affiliation: Clinical Pharmacology, Institute of Public Health, Faculty of Health Sciences, University of Southern Denmark, JB Winsløws Vej 19, Odense C, DK-5000, Denmark. laagaard@health.sdu.dk
authors.forename: Lise
authors.initials: L
authors.lastname: Aagaard
authors.forename: Ebba Holme
authors.initials: EH
authors.lastname: Hansen
mesh_terms: D016907:Adverse Drug Reaction Reporting Systems / Q000706:statistics & numerical data; D002491:Central Nervous System Agents / Q000009:adverse effects*; D016208:Databases, Factual; D064420:Drug-Related Side Effects and Adverse Reactions / Q000453:epidemiology*; D005060:Europe / Q000453:epidemiology; D006801:Humans; D060735:Pharmacovigilance
chemical_list: D002491:Central Nervous System Agents