Saw Palmetto (Serenoa repens) as a tool for helping with Urinary support

This updated Cochrane systematic review assessed Serenoa repens for lower urinary tract symptoms due to benign prostatic enlargement, evaluating its effect on urinary symptoms and flow against placebo.

This systematic review and meta-analysis assessed Serenoa repens, alone or combined with other phytotherapy, against placebo in men with lower urinary tract symptoms due to benign prostatic enlargement.

This systematic review and meta-analysis compared Serenoa repens with tamsulosin in benign prostatic hyperplasia, finding comparable relief of lower urinary tract symptoms after at least six months of treatment.

Objectives To comprehensively evaluate the efficacy and safety of the hexanic extract of Serenoa repens (HESr, Permixon ® ; Pierre Fabre Médicament, Castres, France), at a dose of 320 mg daily, as monotherapy for the treatment of lower urinary tract symptoms associated with benign prostatic hyperplasia (LUTS/BPH). Materials and methods We conducted a systematic review and meta-analysis of randomised controlled trials (RCTs) and prospective observational studies in patients with LUTS/BPH identified through searches in Medline, Web of Knowledge (Institute for Scientific Information), Scopus, the Cochrane Library, and bibliographic references up to March 2017. Articles studying S. repens extracts other than Permixon were excluded. Data were collected on International Prostate Symptom Score (IPSS), maximum urinary flow rate (Q max ), nocturia, quality of life, prostate volume, sexual function, and adverse drug reactions (ADRs). Data obtained from RCTs and observational studies were analysed jointly and separately using a random effects model. A sub-group analysis was performed of studies that included patients on longer-term treatment (≥1 year). Results Data from 27 studies (15 RCTs and 12 observational studies) were included for meta-analysis (total N = 5 800). Compared with placebo, the HESr was associated with 0.64 (95% confidence interval [CI] -0.98 to -0.31) fewer voids/night (P max of 2.75 mL/s (95% CI 0.57 to 4.93; P = 0.01). When compared with α-blockers, the HESr showed similar improvements on IPSS (weighted mean difference [WMD] 0.57, 95% CI -0.27 to 1.42; P = 0.18) and a comparable increase in Q max to tamsulosin (WMD -0.02, 95% CI -0.71 to 0.66; P = 0.95). Efficacy assessed using the IPSS was similar after 6 months of treatment between the HESr and 5α-reductase inhibitors (5ARIs). Analysis of all available published data for the HESr showed a mean improvement in IPSS from baseline of -5.73 points (95% CI -6.91 to -4.54; P Conclusion The present meta-analysis, which includes all available RCTs and observational studies, shows that the HESr (Permixon) reduced nocturia and improved Q max compared with placebo and had a similar efficacy to tamsulosin and short-term 5-ARI in relieving LUTS. HESr (Permixon) appears to be an efficacious and well-tolerated therapeutic option for the long-term medical treatment of LUTS/BPH.

This review summarises current evidence for Serenoa repens (saw palmetto) in lower urinary tract symptoms / benign prostatic hyperplasia and its clinical implications, supporting its traditional use for prostate and urinary support.

Context A recent Cochrane Collaboration meta-analysis of randomized controlled trials (RCTs) evaluating the efficacy of different extracts of Serenoa repens in relieving lower urinary tract symptoms (LUTS) due to benign prostatic hyperplasia (BPH) concluded that these extracts were no more effective than placebo. However, among all Serenoa repens extracts, Permixon (Pierre Fabre Medicament, Paris, France) has the highest activity and the most accurate standards of drug preparation and extraction. Objective To evaluate the efficacy and safety of Permixon in the treatment of LUTS/BPH. Evidence acquisition A systematic review and meta-analysis of the literature was performed in January 2016 using the Medline, Scopus, and Web of Science databases, searching for the term Serenoa repens in all fields of the records. Only RCTs reporting on efficacy and safety of Permixon in the treatment of LUTS/BPH were selected. Evidence synthesis The systematic search identified 12 RCTs: 7 compared Permixon with placebo; 2 compared Permixon with tamsulosin; 2 compared Permixon plus tamsulosin with, respectively, placebo plus tamsulosin and tamsulosin alone; and 1 compared Permixon with finasteride. Permixon was significantly more effective than placebo in reducing the number of nocturnal voids (weighted mean difference [WMD] -0.31; p=0.03) and increasing maximum flow rate (Q max ; WMD 3.37; p max (WMD -0.16; 95% CI, -0.60 to 0.28; p=0.48). The combination of Permixon and tamsulosin was more effective than Permixon alone for relieving LUTS (WMD 0.31; 95% CI, 0.13-0.48; p max (WMD 0.10; 95% CI -0.02 to 0.21; p=0.10). Permixon had a favorable safety profile, with a very limited impact with regard to ejaculatory dysfunction compared with tamsulosin (0.5% vs 4%; p=0.007) and with regard to decreased libido and impotence compared with short-term finasteride (2.2% and 1.5% vs 3% and 2.8%, respectively). Conclusions The conclusions of the recent Cochrane meta-analysis on Serenoa repens in the treatment of LUTS/BPH apparently do not apply to Permixon. Our meta-analysis showed that Permixon decreased nocturnal voids and Q max compared with placebo and had efficacy in relieving LUTS similar to tamsulosin and short-term finasteride. Moreover, Permixon had a favorable safety profile with a very limited impact on sexual function, which is significantly affected by all other drugs used to treat LUTS/BPH. Patient summary A systematic review of the literature showed that Permixon was effective for relieving urinary symptoms due to prostate enlargement and improving urinary flow compared with placebo. Permixon had efficacy similar to tamsulosin and short-term finasteride in relieving urinary symptoms. Permixon was well tolerated and had a very limited impact on sexual function.

Background Benign prostatic hyperplasia (BPH) is a nonmalignant enlargement of the prostate, which can lead to obstructive and irritative lower urinary tract symptoms (LUTS). The pharmacologic use of plants and herbs (phytotherapy) for the treatment of LUTS associated with BPH is common. The extract of the berry of the American saw palmetto, or dwarf palm plant, Serenoa repens (SR), which is also known by its botanical name of Sabal serrulatum, is one of several phytotherapeutic agents available for the treatment of BPH. Objectives This systematic review aimed to assess the effects and harms of Serenoa repens in the treatment of men with LUTS consistent with BPH. Search methods We searched for trials in general and in specialized databases, including the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE®, EMBASE, CINAHL®, Web of Science, SCOPUS, BIOSIS Previews®, LILACS, ClinicalTrials.gov, Controlled-Trials.com, World Health Organization (WHO), and Google Scholar. We also handsearched systematic reviews, references, and clinical practice guidelines. There were no language restrictions. Selection criteria Trials were eligible if they randomized men with symptomatic BPH to receive preparations of SR (alone or in combination) for at least four weeks in comparison with placebo or other interventions, and included clinical outcomes, such as urologic symptom scales, symptoms, and urodynamic measurements. Eligibility was assessed by at least two independent observers (JT, RM). Data collection and analysis One review author (JT) extracted Information on patients, interventions, and outcomes which was then checked by another review author (RM). The main outcome measure for comparing the effectiveness of SR with active or inert controls was change in urologic symptom-scale scores, with validated scores taking precedence over non validated ones. Secondary outcomes included changes in nocturia and urodynamic measures. The main outcome measure for harms was the number of men reporting side effects. Main results In a meta-analysis of two high quality long-term trials (n = 582), Serenoa repens therapy was not superior to placebo in reducing LUTS based on the AUA (mean difference (MD) 0.25 points, 95% confidence interval (CI) -0.58 to 1.07). A 72 week trial with high quality evidence, using the American Urological Association Symptom Score Index, reported that SR was not superior to placebo at double and triple doses. In the same trial the proportions of clinical responders (≥ three-point improvement) were nearly identical (42.6% and 44.2% for SR and placebo, respectively), and not significant (RR 0.96, 95% CI 0.76 to 1.22).This update, which did not change our previous conclusions, included two new trials with 444 additional men, an 8.5% (5666/5222) increase from our 2009 updated review, and a 28.8% (1988/1544) increase for our main comparison, SR monotherapy versus placebo control (17 trials). Overall, 5666 men were assessed from 32 randomized, controlled trials, with trial lengths from four to 72 weeks. Twenty-seven trials were double blinded and treatment allocation concealment was adequate in 14.In a trial of high quality evidence (N = 369), versus placebo, SR did not significantly decrease nightly urination on the AUA Nocturia scale (range zero to five) at 72 weeks follow-up (one-sided P = 0.19).The three high quality, moderate-to-long term trials found peak urine flow was not improved with Serenoa repens compared with placebo (MD 0.40 mL/s, 95% CI -0.30 to 1.09).Comparing prostate size (mean change from baseline), one high quality 12-month trial (N = 225) reported no significant difference between SR and placebo (MD -1.22 cc, 95% CI -3.91 to 1.47). Authors' conclusions Serenoa repens, at double and triple doses, did not improve urinary flow measures or prostate size in men with lower urinary tract symptoms consistent with BPH.

This updated meta-analysis of clinical trials found the Serenoa repens extract Permixon improved peak urinary flow and reduced nocturia versus placebo in symptomatic benign prostatic hyperplasia.

Introduction The use of complementary and alternative medications has become a multi-million dollar business in the United States and comprises more than half of all filled prescriptions for benign prostatic hyperplasia (BPH) in Europe. For the practicing urologist, understanding the phytotherapeutic agents available, their proposed mechanism of action, the research supporting their use, and their safety profiles has become increasingly important as more patients inquire into their use. Materials and methods A comprehensive literature search was conducted to identify pertinent articles pertaining to alternative and complementary treatment options for the management of BPH. Treatments demonstrating adequate clinical data, including Serona repens, Pygeum africanum, and Secale cereal, were selected for in depth review. Results Small clinical trials for each of the agents demonstrated mixed results while larger more soundly constructed studies found no significant benefit for the use of phytotherapy in the treatment of BPH. Conclusions Based on the available literature, there is no evidence that phytotherapy significantly improves symptoms of BPH against placebo, despite being largely safe for ingestion. In patients with mild BPH symptoms who are reluctant to take standard pharmaceutical medications may try these agents provided that the patient understands their current limitations. Those with moderate or severe BPH should be discouraged from alternative and complementary treatments.

In a double-blind placebo-controlled randomized trial of 100 men with benign prostatic hyperplasia symptoms, Serenoa repens extract was compared with placebo for improvement of urinary symptoms and flow.