Int Neurourol J.  2024 Dec;28(4):264-269. 10.5213/inj.2448374.187.

Efficacy of Combined Therapy With Silodosin and Solifenacin in Females With Overactive Bladder

• Jeon BJ
• Chang HK
• Tae BS
• Park JY
• Yoon DK
• Bae JH

• KMID: 2562779
• DOI: http://doi.org/10.5213/inj.2448374.187

Abstract

Purpose
We aimed to assess the clinical efficacy and safety of combining silodosin and solifenacin for overactive bladder (OAB) in females.
Methods
A retrospective analysis of 586 females with OAB was conducted. Patients received either combination therapy (silodosin 8 mg + solifenacin 5 mg) or monotherapy (solifenacin 5 mg) for 12 weeks. Baseline and follow-up assessments included the overactive bladder symptom score (OABSS), International Prostate Symptom Score (IPSS), quality of life (QoL), maximum flow rate (Qmax), voided volume (VV), and postvoid residual urine volume (PVR).
Results
Overall, 287 and 299 patients received combination therapy and monotherapy respectively. Both groups experienced significant improvements in OABSS and total IPSS after 12 weeks. The combination therapy group demonstrated a greater improvement in QoL compared to the monotherapy group (P=0.031). No significant differences were observed in Qmax or VV between the groups. However, the combination therapy group showed a significant reduction in PVR compared to the monotherapy group (P<0.001).
Conclusions
Combining silodosin with solifenacin significantly improved OAB symptoms and QoL in females. This combination therapy was particularly effective in reducing postvoid residual volume compared to solifenacin alone. These findings suggest that adding an alpha-blocker to antimuscarinic therapy can enhance OAB management and patient satisfaction.

Keyword

Urinary bladder; Overactive; Silodosin; Solifenacin succinate