Prateek Upadhyay on Instagram: "Alprostadil injection is used to treat men who have erectile dysfunction (also called sexual impotence). It belongs to a group of medicines called vasodilators that can increase blood flow by expanding blood vessels. This medicine causes an erection because it increases the blood flow to the penis. Alprostadil should not be used as a sexual aid by men who do not have erectile dysfunction. If the medicine is not used properly, permanent damage to the penis and loss