Abstract Title:

[Comparison of a phytotherapeutic agent (Permixon) with an alpha-blocker (Tamsulosin) in the treatment of benign prostatic hyperplasia: a 1-year randomized international study].

Abstract Source:

Prog Urol. 2002 Jun;12(3):384-92; discussion 394-4. PMID: 12189744

Abstract Author(s):

Frans Debruyne, Gary Koch, Peter Boyle, Fernando Calais Da Silva, Jay G Gillenwater, Freddie C Hamdy, Paul Perrin, Pierre Teillac, Remigio Vela-Navarrete, Jean-Pierre Raynaud,

Article Affiliation:

Academic Hospital Nijmegen, Nijmegen Sint Radboud, Pays-Bas.


OBJECTIVE: While the lipidosterolic extract (LSESr) of Serenoa repens--Permixon--has been shown to have an equivalent efficacy to finasteride in patients with benign prostatic hyperplasia (BPH), to date, there has been no valid comparison of phytotherapy with alpha-blockers. The aim of this study was to assess the equivalent efficacy of Permixon and tamsulosin.

METHODS: Eight hundred and eleven men with symptomatic BPH (international prostdate symptom score, I-PSS>or = 10) were recruited in 11 European countries for a 12-month, double-blind randomized trial. After a 4-week run-in period, 704 patients were randomly assigned to either tamsulosin 0.4 mg per day (N = 354) or Permixon 320 mg per day (N = 350). I-PSS, QoL and maximum urinary flow rate (Qmax) were evaluated at baseline and periodically for 1 year. Prostate volume and serum prostate-specific antigen (PSA) were measured at selection and at endpoint. The endpoint analysis was performed on the per-protocol (PP) population of 542 patients (tamsulosin: N = 273; Permixon: N = 269).

RESULTS: At 12 months, I-PSS decreased by 4.4 in each group and no differences were observed in either irritative or obstructive symptom improvements. The increase in Qmax was similar in both treatment groups (1.8 ml/s Permixon, 1.9 ml/s tamsulosin). PSA remained stable while prostate volume decreased slightly in the Permixon-treated patients. The two compounds were well tolerated, however, ejaculation disorders occurred more frequently in the tamsulosin group.

CONCLUSION: This study demonstrated that Permiwon and tamsulosin are equivalent in the medical treatment of lower urinary tract symptoms in men with BPH, during and up to 12 months of therapy.

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