You're not really giving anyone here enough information to work with. If you want solid advise you are going to have to give more information. What are your "buddies" stats first of all? What kind of test? Does he have a history of bad sides with test, water retention, hypertension, gyno? Dostinex is fine in order to combat prolactin related side effects if that's what it's being used for. I find that it helps out my sex drive while on tren as well. It is also really expensive if you really don't need it. I know absolutely nothing about katanadrol and I would be lying if I said I did... the only thing I know of that mimics tren is tren. I would love to hear some info on some of these new items I keep seeing, i.e. katanadrol, happydrol, whatever. And when I say info I mean someone actually took it, had the blood work done, and saw the results reflected in actual numbers. I'm not flaming the product, I'm just curious.