Institute of Psychiatry, Kings College London, UK
Croatian Institute for Brain Research, Medical School, University of Zagreb, Croatia
Central Institute of Mental Health, Division of Genetic Epidemiology in Psychiatry, Mannheim, Germany
Centre for Psychiatric Research, Aarhus University Hospital, Risskov, Denmark
Department of Psychiatry, University of Bonn, Germany
Institute of Public Health, Ljubljana, Slovenia
Laboratory of Psychiatric Genetics, Poznan University of Medical Sciences, Poland
Université Libre de Bruxelles, Erasme Academic Hospital, Department of Psychiatry, Brussels, Belgium
Biological Psychiatry Unit and Dual Diagnosis ward IRCCS, Centro San Giovanni di Dio, FBF, Brescia, Italy
Central Institute of Mental Health, Division of Genetic Epidemiology in Psychiatry, Mannheim, Germany
Institute of Psychiatry, Kings College London
Department of Psychiatry, University of Bonn, Germany
Laboratory of Psychiatric Genetics, Poznan University of Medical Sciences, Poland
Educational and Research Institute Ozara, Ljubljana, Slovenia
Mood Disorders Research Unit, Aarhus University Hospital, Risskov, Denmark
Croatian Institute for Brain Research, Medical School, University of Zagreb, Croatia
Biological Psychiatry Unit and Dual Diagnosis ward IRCCS, Centro San Giovanni di Dio, FBF, Brescia, Italy
Université Libre de Bruxelles, Erasme Academic Hospital, Department of Psychiatry, Brussels, Belgium
Institute of Psychiatry, Kings College London, UK
Correspondence: Rudolf Uher, P080 SGDP, Institute of Psychiatry, 16 De Crespigny Park, London SE5 8AF, UK. Email: r.uher{at}iop.kcl.ac.uk
N.H. participated in clinical trials sponsored by pharmaceutical companies, including GlaxoSmithKline and Lundbeck. A.F., P.M. and K.J.A have received consultancy fees and honoraria for participating in expert panels from pharmaceutical companies, including Lundbeck and GlaxoSmithKline.
The GENDEP study was funded by a European Commission Framework 6 grant, EC Contract Ref.: LSHB-CT-2003-503428. Lundbeck provided both nortriptyline and escitalopram free of charge for the GENDEP study. GlaxoSmithKline and the Biomedical Research Centre for Mental Health at the Institute of Psychiatry, Kings College London and South London and Maudsley NHS Foundation Trust (funded by the National Institute for Health Research, Department of Health, UK) contributed by funding an add-on project in the London centre. The funders had no role in the design and conduct of the study, in data collection, analysis, interpretation or writing the report.
Background
Adverse drug reactions are important determinants of non-adherence to antidepressant treatment, but their assessment is complicated by overlap with depressive symptoms and lack of reliable self-report measures.
Aims
To evaluate a simple self-report measure and describe adverse reactions to antidepressants in a large sample.
Method
The newly developed self-report Antidepressant Side-Effect Checklist and the psychiatrist-rated UKU Side Effect Rating Scale were repeatedly administered to 811 adult participants with depression in a part-randomised multicentre open-label study comparing escitalopram and nortriptyline.
Results
There was good agreement between self-report and psychiatrists ratings. Most complaints listed as adverse reactions in people with depression were more common when they were medication-free rather than during their treatment with antidepressants. Dry mouth (74%), constipation (33%) and weight gain (15%) were associated with nortriptyline treatment. Diarrhoea (9%), insomnia (36%) and yawning (16%) were more common during treatment with escitalopram. Problems with urination and drowsiness predicted discontinuation of nortriptyline. Diarrhoea and decreased appetite predicted discontinuation of escitalopram.
Conclusions
Adverse reactions to antidepressants can be reliably assessed by self-report. Attention to specific adverse reactions may improve adherence to antidepressant treatment.
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