unfortunately i've never had it available, although i certainly would try it. I've been googling the term pregnyl often and can't seem to find nearly as much hard evidence or advice. There's only 1 or 2 guys at my local powerhouse that seem to have any knowledge whatsoever, and they are very difficult to get a hold of without nagging.
I don't wanna be the nag. Granted im 5'8 240 and have come a long way since i've started searching this website, but in this category i am certainly no expert. Alot of my boys who are BIG BIG, seem to get on the stuff and never come off. I would never do it, but i am curious as to how they stay healthy