Not sure if I ever used it, but I know I tried Caverject back around 02/04 & thought it worked well. Put it in my lateral delts, as my rear delts overpowered them & put it in the long head of my tri's to see how much more they'd "blow up"( that sounds lame AF, I know. Couldn't think of a diff term... My tri's have alwaus been good, wanted to see how big/round they could get)..? & thebshit did what it was supposed to. Just didn't last very long. Few hrs or so, but didn't blur any desperation. Although I was only about 7-8%(tjatbwas when I was still lean yr round and couldn't get above 10-12% if I tried).