Caverject Impulse. Pfizer. Accessed June 28, 2016 from https://www.pfizermedicalinformation.com/en-us/caverject-impulse-alprostadil
Edex. Endo Pharma. Accessed June 28, 2016 from http://www.endo.com/File%20Library/Products/Prescribing%20Information/edex_prescribing_information.html
Alprostadil. DRUGDEX® System. Truven Health Analytics. Accessed 6/28/16 from http://www.micromedexsolutions.com/micromedex2/