(Alprostadil is also referred to as prostaglandin E1. In powdered form, it may be called CaverJect or Edex.) Papaverine plus phentolamine moreover alprostadil (Tri-Blend) is considered the most potent solution. It needs refrigeration and it has a similar side effects as papaverine and alprostadil. Quad-Combine, a combination of Tri-Mix in addition … Read More