Efficacy and safety of a combination of Sabal and Urtica extract in lower urinary tract symptoms--long-term follow-up of a placebo-controlled, double-blind, multicenter trial.
In an open-label extension of a randomized, double-blind clinical trial, the long-term efficacy and tolerability of a fixed combination of 160 mg Sabal fruit extract WS 1473 and 120 mg Urtica root extract WS 1031 per capsule (PRO 160/120) were investigated in elderly men with moderate or severe lower urinary tract symptoms (LUTS) caused by benign prostatic hyperplasia (BPH). Two hundred and fifty-seven patients were randomly treated with 2 x 1 capsule/day PRO 160/120 or placebo for 24 weeks, followed by a 24-week control period and a 48-week follow-up period in which all patients received PRO 160/120. Efficacy measures included the assessment of LUTS [International Prostate Symptom Score ((I-PSS) self-rating questionnaire] and uroflow and sonographic parameters. Two hundred and nineteen subjects participated in the follow-up. Between baseline and end of observation (week 96) the I-PSS total score was reduced by 53% (P < 0.001), peak and average urinary flow increased by 19% (P < 0.001), and residual urine volume decreased by 44% (P = 0.03). The incidence of adverse events during follow-up was one in 1,181 treatment days; in only one event a causal relationship with intake of PRO 160/120 could not be excluded. Treatment with PRO 160/120 thus provides a clinically relevant benefit over a period of 96 weeks.
Lopatkin
Nikolai
N
Institute of Urology, 3rd Parkovaya Street 51, 105425, Moscow, Russia, avsivkoff@yandex.ru.
Sivkov
Andrey
A
Schläfke
Sandra
S
Funk
Petra
P
Medvedev
Alexander
A
Engelmann
Udo
U
D000368:Aged; D018450:Disease Progression; D004311:Double-Blind Method; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008517:Phytotherapy / Q000379:methods*; D010936:Plant Extracts / Q000009:adverse effects / Q000627:therapeutic use*; D011470:Prostatic Hyperplasia / Q000150:complications; D028024:Serenoa; D012720:Severity of Illness Index; D018709:Statistics, Nonparametric; D013997:Time Factors; D016896:Treatment Outcome; D014555:Urination Disorders / Q000188:drug therapy* / Q000209:etiology / Q000503:physiopathology; D014563:Urodynamics; D026982:Urtica dioica
D010936:Plant Extracts