I was on it for about 7 months and honestly I didn't notice much of a difference with the medication. I still drank when I was on it and I still thought about drinking when I wasn't drinking.
I had one injection that got really irrated ant the site and I broke out in an infect and the site was swollen to about 5 times it's normal size. I was on vaction and didn't have it looked at till I got home. I was lucky I did.. it was going to poision me soon after I went to the doctor.
Anyway, I know this medication works for some people. It just didn't work for me.