I don't know why sostenon is getting such a bad plug here. I have personally used it in several cycles and the only side effect I have ever had is acne and getting bigger, harder, and a hell of alot stronger. In my opinion it is the best form of test you can use for a bodybuilder anyway. However I do notice a huge difference in the different versions as far as side effects and overall benefits. In my opinion the Karachi amps from Pakistan are the best.