text: <unk> (injection) is an erectile dysfunction agent that is FDA approved for the treatment of erectile dysfunction due to neurogenic, vasculogenic, psychogenic, or mixed etiology.   Common adverse reactions include penile pain, bleeding, hematoma, ecchymosis, erythema, and penile fibrosis.
option_0: Alprostadil 
option_1: Iofendylate
option_2: Epoprostenol
option_3: Bosentan
option_4: Endralazine
option_5: Guanoxan
option_6: Papaverine
option_7: Minoxidil 