Alprostadil belongs to a group of medicines called vasodilators. These drugs can increase blood flow by expanding blood vessels. This medicine is identical to a naturally occurring substance found in the body that helps keep the blood vessels open and increases blood flow. Alprostadil helps treat ED by increasing the blood flow to the penis, thus causing an erection.
Alprostadil injection should not be used as a sexual aid by men who do not have erectile dysfunction. If this medicine is not used properly, permanent damage to the penis and loss of the ability to have erections could result.
Alprostadil is also available as an intraurethral suppository.