15b157f7_Institute___Urology_at_Hopkins__Disadvantages
[Types of RX] Penile injection therapy [Advantages] -Very effective, mimics a natural erection response -Less cumbersome than vacuum devices -Works "on demand" -Erection lasts for one to two hours [Disadvantages] 
-Requires training to master technique and a clinical visit to determine dosage, than follow-up -Limited to two uses per week -Possible side effects: prolonged erection, scarring -May be costly
Erectile Dysfunction -The James Buchanan Brady Urological Institute - Urology at Hopkins
Disadvantages