title: Sildenafil citrate (Viagra) in erectile dysfunction: near normalization in men with broad-spectrum erectile dysfunction compared with age-matched healthy control subjects.
abstract: OBJECTIVE
  To evaluate the efficacy, safety, and tolerability of sildenafil in men with broad-spectrum erectile dysfunction (ED), with reference to age-matched healthy control subjects.
  
  
  METHODS
  One hundred eleven patients were enrolled in a randomized, double-blind, placebo-controlled, parallel-group, 12-week, flexible-dose study. Efficacy assessments included the International Index of Erectile Function (IIEF), a global assessment question, and patient event log data. In a separate, nontreatment study, 109 control subjects also completed the IIEF.
  
  
  RESULTS
  Mean IIEF scores at baseline were significantly lower for patients with ED than for control subjects without a history of ED. After treatment, mean IIEF scores for patients receiving sildenafil approached values observed in control subjects and were significantly higher than mean scores for patients receiving placebo (P<0.01). Responses to the global assessment question and patient log data corroborated the IIEF results. Sildenafil was well tolerated, with no discontinuations because of adverse events.
  
  
  CONCLUSIONS
  The results indicate that sildenafil, an effective oral therapy for the treatment of broad-spectrum ED, is associated with a near normalization of patient erectile function.
authors: Royal Victoria Hospital, Belfast, United Kingdom.
authors: W W
authors: WW
authors: Dinsmore
authors: M
authors: M
authors: Hodges
authors: C
authors: C
authors: Hargreaves
authors: I H
authors: IH
authors: Osterloh
authors: M D
authors: MD
authors: Smith
authors: R C
authors: RC
authors: Rosen
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D004311:Double-Blind Method; D007172:Erectile Dysfunction / Q000188:drug therapy* / Q000209:etiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D010726:Phosphodiesterase Inhibitors / Q000627:therapeutic use*; D010879:Piperazines / Q000627:therapeutic use*; D011687:Purines; D000068677:Sildenafil Citrate; D013450:Sulfones
chemical_list: D010726:Phosphodiesterase Inhibitors; D010879:Piperazines; D011687:Purines; D013450:Sulfones; D000068677:Sildenafil Citrate