If you inject your dick, what would happen?

Erectile dysfunction is commonly experienced in men with diabetes mellitus. Inserting or injecting medicine into the penis usually works well, but it is usually only considered after you have tried taking pills for erection problems. For those patients who do not respond to oral therapy, drugs can be injected directly into the penis. Self-injection is a good option if you have erectile dysfunction (ED). You put a tiny needle into the side of your penis and inject medicine.
Occasionally, penile injections can cause:

1. fainting
2. dizziness
3. low blood pressure.
4. 
   swelling
5. In rare instances, priapism or prolonged erections can occur.