(Alprostadil is often called prostaglandin E1. In powdered form, it could be referred to as CaverJect or Edex.) Papaverine in addition phentolamine as well as alprostadil (Tri-Mix) is the most strong choice. It necessitates refrigeration and it has a similar side effects as papaverine and alprostadil. Quad-Mix, a mix of Tri-Mix as well as a drug re