1.   The next test called for the penile injection of a drug called alprostadil, which is supposed to stimulate an erection.

2.   The third approved treatment is the penile injection called Caverject, which was used as part of my ultrasound test.

3.   They then found their relationship in trouble when Steven began using penile injections.

4.   Viagra became a drug industry phenomenon by working about as well as previous anti-impotence drugs without the discomfort of penile injections or suppositories.