Priapism is the word to describe an unwanted, prolonged erection. Injecting too much of the drug may cause an erection which lasts much longer than intended. After four hours, men should seek medical help for reversal of the erection. This is done by injecting an adrenaline-like drug into the penis. The pain from injecting is primarily from the needle puncture.
Many men are frightened to think of injecting the penis with a needle.
This apprehension may account for the high dropout rate for men on injections. The average patient stayed in the study group for seven months before leaving it. Other men, however, inject successfully for years. Though Medicare does not pay for this treatment, some insurance plans will cover injections just like other prescriptions. Injection System Urethral Suppository Made available November of 1996, MUSE is a non-injectable delivery system for alprostadil, a drug approved by the FDA for the treatment of impotence.