Funny, Reforvit was the first AAS I ever used. We had what looked liked it must have been a 50-60ml bottle of the stuff, It had a bull or a cow on the label. I was in highschool and 4 of us shared the bottle, 2 shots a weeks.
Now that I think of it, It was rather harsh and none of us knew how to do a proper injection. I went to go tanning a few days later and couldn't get out of the bed because i had to lean on that ass cheek to roll out.
I would think the pro's are that its less liver toxic then the oral and it would last longer, how long I don't know.