Switch to Mania After Acute Antidepressant Treatment for Bipolar Depression: A Systematic Review and Network Meta-Analysis of Randomised Controlled Trials
Oliva, V., De Prisco, M., La Spina, E., Paolucci, S., Fico, G., Anmella, G., et al. (2025). Switch to mania after acute antidepressant treatment for bipolar depression: a systematic review and network meta-analysis of randomised controlled trials. *eClinicalMedicine*, 87, 103413. https://doi.org/10.
Switch to Mania After Acute Antidepressant Treatment for Bipolar Depression: A Systematic Review and Network Meta-Analysis of Randomised Controlled Trials
Citation
Oliva, V., De Prisco, M., La Spina, E., Paolucci, S., Fico, G., Anmella, G., et al. (2025). Switch to mania after acute antidepressant treatment for bipolar depression: a systematic review and network meta-analysis of randomised controlled trials. eClinicalMedicine, 87, 103413. https://doi.org/10.1016/j.eclinm.2025.103413
Published
2025
Journal
eClinicalMedicine (The Lancet)
Study Design
Systematic review and network meta-analysis (NMA) of randomised controlled trials (RCTs)
Data Sources
PubMed, Embase, PsycINFO, and Web of Science from database inception up to Feb 19, 2025, with no language restrictions.
Study Selection
Primary Outcome
Rate of switch to mania after antidepressant treatment
Key Findings
1. No individual antidepressant showed a significantly increased switch risk compared to placebo
2. Venlafaxine showed the highest risk estimate among antidepressants, though not statistically significant: RR 4.53 (95% CI 0.47-43.25)
3. Venlafaxine was the only compound with consistent signals of increased switch in individual studies
4. Evidence base was larger for add-on therapy, while fewer data were available for monotherapy
5. Sensitivity analyses confirmed the results
6. Heterogeneity was low
7. Overall confidence in the evidence was rated as low
Interpretation
Although some evidence of increased risk of switching to mania was observed, no individual antidepressant showed a significantly increased switch risk compared to placebo. However, venlafaxine consistently showed the highest relative risk across individual studies, sensitivity and post-hoc analyses. These findings offer a more granular understanding of switch risk among antidepressants and highlight venlafaxine as a compound warranting special attention.
Implications
Limitations
Preregistration
Protocol preregistered on the Open Science Framework
Relevance to Clancy Case
This study is relevant to understanding the pharmacological context of postpartum psychiatric treatment. The finding that venlafaxine consistently showed the highest (though not statistically significant) risk of switch to mania is clinically significant for understanding medication-related risks in bipolar spectrum conditions. The study underscores the complexity of antidepressant management in vulnerable populations.