Effect of tibolone versus hormone replacement therapy on lower urinary tract symptoms and sexual function.

Background: Few studies have compared the effects of tibolone versus hormone replacement therapy (HRT) on lower urinary tract symptoms and female sexual function. The current study aimed to compare these treatments.

Methods: Women with climacteric symptoms were recruited consecutively and allocated to receive tibolone (2.5 mg) or estradiol valerate (1 mg) and medroxyprogesterone acetate (2.5 mg). Patients were followed up at 4 weeks and 12 weeks after treatment.

Results: Overall, there were no significance of improvement in the International Prostate Symptoms Score (IPSS) scores in the HRT group. However, nocturia and the IPSS storage score improved after tibolone treatment. In addition, orgasm, satisfaction and pain improved after HRT. However, desire, lubrication, and Female Sexual Function Index (FSFI) total scores improved after tibolone treatment. There was a between-group difference in the change from baseline in the nocturia score after 4 weeks of treatment (0.1 ± 0.9 for HRT vs. -0.4 ± 1.2 for tibolone, p = 0.02). Nonetheless, there were no significant differences of the changes from baseline in the other IPSS and FSFI domains between the tibolone and HRT groups.

Conclusion: Despite the limited effect, tibolone seems to have more benefit in nocturia than HRT. In addition, tibolone seems to have benefits on overall low urinary tract storage symptoms; and both tibolone and HRT seem to have beneficial effects on female sexual function, despite there were no significant differences between tibolone and HRT.