Abstract
Purpose
To determine the effects of the herbal fixed-dose combination PRO 160/120 (extracts from saw palmetto fruits and stinging nettle roots) on nocturnal voiding frequency, as measured by question 7 of the IPSS questionnaire, in patients with moderate-to-severe LUTS/BPH after 24 weeks of treatment compared to placebo, to the α-blocker tamsulosin, or to the 5α-reductase inhibitor finasteride.
Methods
The study is about post hoc evaluation of four published randomized, double-blind clinical trials on PRO 160/120, two compared with placebo, one with finasteride and one with tamsulosin. In addition, a pooled data analysis of the two placebo-controlled trials was conducted.
Results
We analyzed data from a total of 922 patients with a mean age of 66 years and a mean baseline nocturnal voiding frequency of 2.1. In the pooled analysis of placebo-controlled trials, nocturnal voids improved by 0.8 (29 %) with PRO 160/120 compared to 0.6 (18 %) with placebo (p = 0.015, Wilcoxon test, one-tailed). The 69 % responder rate to PRO 160/120 was significantly superior to the placebo response (52 %; p = 0.003, χ 2-test, two-tailed). The majority of responders improved by 1 void/night. Absolute improvements and response rates were consistently higher with PRO 160/120 than with placebo over a range of baseline nocturnal voiding frequencies. There were no differences between PRO 160/120 and finasteride or tamsulosin regarding absolute improvement of nocturnal voids or responds rates.
Conclusion
PRO 160/120 significantly improved nocturnal voiding frequency compared to placebo and similar to tamsulosin or finasteride.
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Abbreviations
- BPH:
-
Benign prostatic hyperplasia
- IPSS:
-
International Prostate Symptom Score
- LUTS:
-
Lower urinary tract symptoms
- PVR:
-
Post-void residual
- Qmax :
-
Maximum urinary flow rate
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Acknowledgments
The four studies on which these analyses were based were funded by Schwabe Pharma, Karlsruhe, Germany.
Conflict of interest
M. Oelke is a consultant, speaker, or trial investigator in the field of LUTS/BPH for Allergan, Apogepha, Astellas, Bayer, Ferring, GlaxoSmithKline, Lilly, Mundipharma, Pfizer, and Recordati. Richard Berges is a lecturer, advisor, and/or study participant in the field of LUTS/BPH for Astellas, GlaxoSmithKline, Ferring, Lilly, Pfizer, and Recordati. S. Schläfke and M. Burkart are employees of Dr. Willmar Schwabe GmbH & Co. KG, Karlsruhe, Germany.
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Oelke, M., Berges, R., Schläfke, S. et al. Fixed-dose combination PRO 160/120 of sabal and urtica extracts improves nocturia in men with LUTS suggestive of BPH: re-evaluation of four controlled clinical studies. World J Urol 32, 1149–1154 (2014). https://doi.org/10.1007/s00345-014-1338-x
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DOI: https://doi.org/10.1007/s00345-014-1338-x