bump it up, and yes a lot of guys say they like combining them! I personally haven't just cause HGH makes my hands so numb it actually is painful, in any case, yes a lot of guys say they like it combined, as HGH when passed through the liver produces Many types of Growth factors, not just insulin-like growth factor, which is the main one and most beneficial for bodybuilding , but their are others produced which makes combining them a good idea if you can afford it.