Caverject contains alprostadil which is similar to the natural substance in your body called prostaglandin E1. It widens blood vessels so that blood can flow in your penis more easily. This makes it easier for you to have an erection. Caverject is used for ??erectile dysfunction? including weak erections or impotence. Your doctor may also use it to help find the exact cause of your erectile dysfunction along with other tests. I have a private prescription If you have a prescription for Caverject please CLICK HERE to place an order. I do not have a prescription Pharmacy 2U can only dispense a Prescription Only Medicine (POM) if your order is accompanied by a valid UK prescription issued by your doctor, consultant or other medical practicioner. Details of where to send the prescription will be issued with your unique order number at the confirmation page. Further Information Caverject (Alprostadil)