Treatment of impotence by intrapenile injections. A comparison of papaverine versus papaverine and phentolamine: a double-blind, crossover trial

J Urol. 1989 Sep;142(3):726-8. doi: 10.1016/s0022-5347(17)38868-7.

Abstract

The efficacy of papaverine, and a combination of papaverine and phentolamine as a pharmacological treatment of impotence was compared in a double-blind, crossover trial. A total of 40 impotent men received intracavernous injections of papaverine (40 mg.) or a combination of papaverine (20 mg.) and phentolamine (0.5 mg.) at monthly intervals. Observations at 20 minutes after injection demonstrated that papaverine caused full erections in 27 per cent of the men and partial erections in 65 per cent. The combined injection resulted in full erections in 48 per cent of the men and 52 per cent had partial erections. The difference was significant (Z equals 2.29, p less than 0.05).

Publication types

  • Clinical Trial
  • Comparative Study
  • Controlled Clinical Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Aged
  • Clinical Trials as Topic
  • Double-Blind Method
  • Drug Combinations
  • Erectile Dysfunction / therapy*
  • Humans
  • Injections / adverse effects
  • Male
  • Middle Aged
  • Pain / etiology
  • Papaverine / therapeutic use*
  • Penile Erection
  • Penis / physiopathology*
  • Phentolamine / therapeutic use*
  • Sexual Behavior / physiology

Substances

  • Drug Combinations
  • Papaverine
  • Phentolamine