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Suicidal thoughts and behaviors associated with fluoroquinolone antibiotics: a real-world pharmacovigilance analysis

Yang L, Chen C, Ding L, Lu T, Li X, Xiao J

Frontiers in pharmacology, 2025

Abstract

Objective: This study aimed to systematically and scientifically investigate the potential associations between the use of fluoroquinolone antibiotics (ciprofloxacin, levofloxacin, moxifloxacin, ofloxacin, norfloxacin, and delafloxacin) and suicidal thoughts and behaviors using data from the Food and Drug Administration Adverse Event Reporting System (FAERS) database.

Methods: The FAERS database was queried from the first quarter of 2004 to the fourth quarter of 2023. Disproportionality analysis was conducted using the reporting odds ratio (ROR) and empirical Bayes geometric mean (EBGM).

Results: A total of 737 cases of suicidal thoughts and behaviors associated with fluoroquinolones (FQs) were reported in the FAERS database during the study period. Overall, FQs did not demonstrate a disproportionate increase in overall cases of suicidal thoughts and behaviors (ROR: 0.74, 95% CI: 0.69-0.79, P < 0.001; EBGM05: 0.69). Stratified analyses revealed no safety signals for suicidal thoughts and behaviors associated with FQs in either females or males. However, subgroup analyses by age groups demonstrated slightly elevated RORs for suicidal thoughts and behaviors in the <18 years age group (ROR: 1.51, 95% CI: 1.05-2.19, P = 0.03) and the 18-24 years age group (ROR: 2.31, 95% CI: 1.75-3.06, P < 0.001), although the EBGM05s values remained below two in both populations. No significant safety signals were observed in the other age groups.

Conclusion: The analysis of reported cases of…

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