Yeah bro, stuff is legit, unlike Viagra and Cialis that affect the blood vessels and blood flow, it somehow interacts with the central nervous system to give you crazy wood. I like it better then Viagra because I don't get that stuffed up feeling like I do with Viagra. Only thing is you do get slight nausea and like fully flushed for about ten minutes after you inject it, then it passes and you're good to go... like a ****in jack hammer. I'd say take 250 mcg (not sure what that is in IU's) from a small syringe like an insulin needle, I never dose much more than that and it works great for me. It gets injected subcutaneously (in the pinch of skin/fat, not into the muscle and def not into the vein) after you mix it with bac water. You'll feel it almost instantly, and for some reason the mornings you cant roll over bc you got a freaking kick stand! I use 2 ML for a standard 10MG vial. There's a place that advertises on here called Rockstar Chemicals, I've tried there stuff, it's really high quality. Have fun bro, write a follow up after you've tried it.