title: Can sildenafil treat primary premature ejaculation? A prospective clinical study.
abstract: BACKGROUND
  Recently, sildenafil has been demonstrated to be effective in treating premature ejaculation (PE). However, these studies ignored female factors and could not exclude the probability of drug interaction when combined with paroxetine. Therefore, the aim of this study was to evaluate the efficacy and safety of sildenafil alone in the treatment of primary PE, taking female factors into consideration.
  
  
  METHODS
  One hundred and eighty potent men with primary PE were randomly divided into three groups and followed up for 6 months. Group A were treated with 50 mg sildenafil as needed, group B with 20 mg paroxetine daily and group C with squeeze technique daily. Intravaginal ejaculatory latency time (IELT), PE grade, intercourse satisfactory score (ISS), frequency of intercourse, and adverse effects of drugs were recorded before treatment, and 3 and 6 months after treatment.
  
  
  RESULTS
  Compared with pretreatment, the three groups had significant differences in all the parameters after 3 or 6 months treatment, except the frequency of intercourse in Group C (all P = 0.00). However, there were no significant differences between 3 and 6 months. Compared with paroxetine and squeeze technique, after 3 or 6 months, sildenafil had significant differences in all the parameters (all P = 0.00). After 6 months, 1.7%, 18.3% and 36.7% patients in groups A, B and C, respectively, withdrew from the study and 86.7%, 60.0% and 45.0% patients, respectively, wanted to be treated further with the original administration, and this was statistically significant (both P = 0.00).
  
  
  CONCLUSIONS
  Sildenafil is very effective and safe to treat PE, and has much higher efficacy than paroxetine and squeeze technique.
authors.affiliation: Department of Urology, People's Hospital of Hainan Province, Haikou, China. weifuwang9999@yahoo.com.cn
authors.forename: Wei-Fu
authors.initials: WF
authors.lastname: Wang
authors.forename: Yang
authors.initials: Y
authors.lastname: Wang
authors.forename: Suks
authors.initials: S
authors.lastname: Minhas
authors.forename: David J
authors.initials: DJ
authors.lastname: Ralph
mesh_terms: D000293:Adolescent; D000328:Adult; D003075:Coitus; D004542:Ejaculation; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D010549:Personal Satisfaction; D010726:Phosphodiesterase Inhibitors / Q000627:therapeutic use*; D010879:Piperazines / Q000627:therapeutic use*; D011446:Prospective Studies; D011687:Purines / Q000627:therapeutic use; D011930:Reaction Time; D012735:Sexual Dysfunction, Physiological / Q000188:drug therapy*; D000068677:Sildenafil Citrate; D013450:Sulfones / Q000627:therapeutic use*
chemical_list: D010726:Phosphodiesterase Inhibitors; D010879:Piperazines; D011687:Purines; D013450:Sulfones; D000068677:Sildenafil Citrate