Yep, I have used it. The Denkall one.
I had bought two vials about a year and a half ago. I ended up using only half of one...
I agree with Bill Roberts on this. This product will strongly aromatize. It gave me gyno the size of grapefruits and I was taking nolvadex and proviron. I quit the stuff after two weeks and had to use a ton of Nolvadex and proviron afterwards to reduce my gyno symptoms.
It will put some muscle mass on you but I would not recommend it. If you decide to use it make sure you have some arimidex on hand (i did not).