title: A randomized, comparative, open-label study of efficacy and tolerability of alfuzosin, tamsulosin and silodosin in benign prostatic hyperplasia.
abstract: OBJECTIVE
  Benign prostatic hyperplasia (BPH) is a common and progressive disease affecting elderly males, often associated with lower urinary tract symptoms (LUTS). α1-blockers are the mainstay in symptomatic therapy of BPH. Because of their greater uroselectivity and minimal hemodynamic effects, alfuzosin, tamsulosin, and silodosin are generally preferred. The aim of this study was to compare the efficacy and tolerability of alfuzosin, tamsulosin, and silodosin in patients with BPH and LUTS.
  
  
  METHODS
  Ninety subjects with BPH and LUTS were randomized into three groups of thirty in each, to receive alfuzosin sustained release (SR) 10 mg, tamsulosin 0.4 mg, or silodosin 8 mg for 12 weeks. The primary outcome measure was a change in the International Prostate Symptom Score (IPSS), and the secondary outcome measures were changes in individual subjective symptom scores, quality of life score (QLS), and peak flow rate (Qmax) from baseline. The treatment response was monitored at 2, 4, 8, and 12 weeks.
  
  
  RESULTS
  IPSS improved by 88.18%, 72.12%, and 82.23% in alfuzosin SR, tamsulosin and silodosin groups (P < 0.001) at 12 weeks. Improvement in QLS was >75% in all the three groups (P < 0.001). A significant improvement in Qmax was seen with alfuzosin and tamsulosin (P = 0.025 and P < 0.001) but not with silodosin (P = 0.153). However, the intergroup differences in IPSS, QLS, and Qmax were not significant. Ejaculatory dysfunction was more common with silodosin and corrected QT (QTc) prolongation occurred only with alfuzosin (two subjects) and tamsulosin (three subjects).
  
  
  CONCLUSIONS
  Alfuzosin, tamsulosin, and silodosin showed similar efficacy in improvement of LUTS secondary to BPH, with good tolerability, acceptability, and minimum hemodynamic adverse effects. Alfuzosin, tamsulosin, and silodosin are comparable in efficacy in symptomatic management of BPH. The occurrence of QTc prolongation in three subjects with tamsulosin in the present study is an unexpected adverse event as there are no reports of QTc prolongation with tamsulosin in any of the previous studies.
authors.affiliation: Department of Pharmacology, Kempegowda Institute of Medical Sciences, Bengaluru, Karnataka, India.
authors.forename: R
authors.initials: R
authors.lastname: Manjunatha
authors.affiliation: Department of Pharmacology, Kempegowda Institute of Medical Sciences, Bengaluru, Karnataka, India.
authors.forename: H P
authors.initials: HP
authors.lastname: Pundarikaksha
authors.affiliation: Department of Urology, Kempegowda Institute of Medical Sciences Hospital and Research Centre, Bengaluru, Karnataka, India.
authors.forename: H R
authors.initials: HR
authors.lastname: Madhusudhana
authors.affiliation: Department of Urology, Kempegowda Institute of Medical Sciences Hospital and Research Centre, Bengaluru, Karnataka, India.
authors.forename: J
authors.initials: J
authors.lastname: Amarkumar
authors.affiliation: Department of Urology, Kempegowda Institute of Medical Sciences Hospital and Research Centre, Bengaluru, Karnataka, India.
authors.forename: B K
authors.initials: BK
authors.lastname: Hanumantharaju
mesh_terms: D058668:Adrenergic alpha-1 Receptor Antagonists / Q000627:therapeutic use*; D000368:Aged; D006801:Humans; D007211:Indoles / Q000627:therapeutic use*; D008297:Male; D008875:Middle Aged; D011470:Prostatic Hyperplasia / Q000188:drug therapy* / Q000503:physiopathology; D011799:Quinazolines / Q000627:therapeutic use*; D013449:Sulfonamides / Q000627:therapeutic use*; D000077409:Tamsulosin; D016896:Treatment Outcome; D064804:Urological Agents / Q000627:therapeutic use*
chemical_list: D058668:Adrenergic alpha-1 Receptor Antagonists; D007211:Indoles; D011799:Quinazolines; D013449:Sulfonamides; D064804:Urological Agents; C047638:alfuzosin; C095285:silodosin; D000077409:Tamsulosin
keywords: alfuzosin; benign prostatic hyperplasia; clinical trial; silodosin; tamsulosin; α1-blockers