Twenty-four years of prescription patterns in bipolar disorder inpatients with vs without lithium: a pharmacoepidemiological analysis of 8,707 cases in German-speaking countries

Abstract Background Global pharmacoepidemiological evidence suggests dynamically changing prescription patterns in patients with bipolar disorders. We assessed trends in the use of pharmacological agents used in the management of bipolar disorders in inpatients. Methods We examined drug use data pro...

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Main Authors: Waldemar Greil, Mateo de Bardeci, Nadja Nievergelt, Andreas Erfurth, Gregor Hasler, Rene Bridler, Sermin Toto, Renate Grohmann, Johanna Seifert, Georgios Schoretsanitis
Format: Article
Language:English
Published: SpringerOpen 2025-02-01
Series:International Journal of Bipolar Disorders
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Online Access:https://doi.org/10.1186/s40345-025-00370-1
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author Waldemar Greil
Mateo de Bardeci
Nadja Nievergelt
Andreas Erfurth
Gregor Hasler
Rene Bridler
Sermin Toto
Renate Grohmann
Johanna Seifert
Georgios Schoretsanitis
author_facet Waldemar Greil
Mateo de Bardeci
Nadja Nievergelt
Andreas Erfurth
Gregor Hasler
Rene Bridler
Sermin Toto
Renate Grohmann
Johanna Seifert
Georgios Schoretsanitis
author_sort Waldemar Greil
collection DOAJ
description Abstract Background Global pharmacoepidemiological evidence suggests dynamically changing prescription patterns in patients with bipolar disorders. We assessed trends in the use of pharmacological agents used in the management of bipolar disorders in inpatients. Methods We examined drug use data provided by the Drug Safety in Psychiatry Programme AMSP (German: “Arzneimittelsicherheit in der Psychiatrie”), including psychiatric hospitals in Germany, Austria and Switzerland. We included data from adult inpatients with bipolar disorders (ICD-10: F31) treated between 1994 and 2017. We compared prescription patterns between patients receiving therapeutic regimens with vs. without lithium. Patients with manic and depressive episodes were also analyzed separately. Results We identified a total of 8,707 patients (58% females, mean age 50.8 ± 14.8 years). Our analysis revealed a decrease of lithium use (up to 2004) and a consistent increase of prescription rates for second-generation antipsychotics (SGA) among which quetiapine (n = 2,677) and olanzapine (n = 1,536) were the most common. Among psychotropic drugs, quetiapine was most frequently combined with lithium (n = 716, 25.6%). Lithium-treated patients received a higher number of drugs compared to patients not receiving lithium (mean number of drugs in patients with vs. without lithium 4.99, n = 2,796 vs. 4.75, n = 5,911, p = 0.002). Thyroid therapeutics were given more often, valproate and quetiapine less often in the lithium group. Antidepressants were consistently prescribed to more than 60% of patients with bipolar depressive episodes. Conclusions Our findings suggest that SGAs are gradually becoming the mainstay treatment option in bipolar disorder, continuously replacing lithium. The use of antidepressants remains concerningly high. We call for action to improve adherence to evidence-based guidelines.
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spelling doaj-art-93cf22dafd624f56b92bf9bdea55d1252025-08-20T02:48:30ZengSpringerOpenInternational Journal of Bipolar Disorders2194-75112025-02-011311910.1186/s40345-025-00370-1Twenty-four years of prescription patterns in bipolar disorder inpatients with vs without lithium: a pharmacoepidemiological analysis of 8,707 cases in German-speaking countriesWaldemar Greil0Mateo de Bardeci1Nadja Nievergelt2Andreas Erfurth3Gregor Hasler4Rene Bridler5Sermin Toto6Renate Grohmann7Johanna Seifert8Georgios Schoretsanitis9Department of Psychiatry and Psychotherapy, LMU University Hospital, LMU MunichPsychiatric Private HospitalPsychiatric Private Hospital1st Department of Psychiatry and Psychotherapeutic Medicine, Klinik HietzingPsychiatry Research Unit, University of FribourgPsychiatric Private HospitalDepartment of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical SchoolDepartment of Psychiatry and Psychotherapy, LMU University Hospital, LMU MunichDepartment of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical SchoolDepartment of Psychiatry, Psychotherapy and Psychosomatics, Hospital of Psychiatry, University of ZurichAbstract Background Global pharmacoepidemiological evidence suggests dynamically changing prescription patterns in patients with bipolar disorders. We assessed trends in the use of pharmacological agents used in the management of bipolar disorders in inpatients. Methods We examined drug use data provided by the Drug Safety in Psychiatry Programme AMSP (German: “Arzneimittelsicherheit in der Psychiatrie”), including psychiatric hospitals in Germany, Austria and Switzerland. We included data from adult inpatients with bipolar disorders (ICD-10: F31) treated between 1994 and 2017. We compared prescription patterns between patients receiving therapeutic regimens with vs. without lithium. Patients with manic and depressive episodes were also analyzed separately. Results We identified a total of 8,707 patients (58% females, mean age 50.8 ± 14.8 years). Our analysis revealed a decrease of lithium use (up to 2004) and a consistent increase of prescription rates for second-generation antipsychotics (SGA) among which quetiapine (n = 2,677) and olanzapine (n = 1,536) were the most common. Among psychotropic drugs, quetiapine was most frequently combined with lithium (n = 716, 25.6%). Lithium-treated patients received a higher number of drugs compared to patients not receiving lithium (mean number of drugs in patients with vs. without lithium 4.99, n = 2,796 vs. 4.75, n = 5,911, p = 0.002). Thyroid therapeutics were given more often, valproate and quetiapine less often in the lithium group. Antidepressants were consistently prescribed to more than 60% of patients with bipolar depressive episodes. Conclusions Our findings suggest that SGAs are gradually becoming the mainstay treatment option in bipolar disorder, continuously replacing lithium. The use of antidepressants remains concerningly high. We call for action to improve adherence to evidence-based guidelines.https://doi.org/10.1186/s40345-025-00370-1Bipolar disordersLithiumMood stabilizerAntipsychoticsAntidepressantsPharmacoepidemiology
spellingShingle Waldemar Greil
Mateo de Bardeci
Nadja Nievergelt
Andreas Erfurth
Gregor Hasler
Rene Bridler
Sermin Toto
Renate Grohmann
Johanna Seifert
Georgios Schoretsanitis
Twenty-four years of prescription patterns in bipolar disorder inpatients with vs without lithium: a pharmacoepidemiological analysis of 8,707 cases in German-speaking countries
International Journal of Bipolar Disorders
Bipolar disorders
Lithium
Mood stabilizer
Antipsychotics
Antidepressants
Pharmacoepidemiology
title Twenty-four years of prescription patterns in bipolar disorder inpatients with vs without lithium: a pharmacoepidemiological analysis of 8,707 cases in German-speaking countries
title_full Twenty-four years of prescription patterns in bipolar disorder inpatients with vs without lithium: a pharmacoepidemiological analysis of 8,707 cases in German-speaking countries
title_fullStr Twenty-four years of prescription patterns in bipolar disorder inpatients with vs without lithium: a pharmacoepidemiological analysis of 8,707 cases in German-speaking countries
title_full_unstemmed Twenty-four years of prescription patterns in bipolar disorder inpatients with vs without lithium: a pharmacoepidemiological analysis of 8,707 cases in German-speaking countries
title_short Twenty-four years of prescription patterns in bipolar disorder inpatients with vs without lithium: a pharmacoepidemiological analysis of 8,707 cases in German-speaking countries
title_sort twenty four years of prescription patterns in bipolar disorder inpatients with vs without lithium a pharmacoepidemiological analysis of 8 707 cases in german speaking countries
topic Bipolar disorders
Lithium
Mood stabilizer
Antipsychotics
Antidepressants
Pharmacoepidemiology
url https://doi.org/10.1186/s40345-025-00370-1
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