Testosterone Propionate Is one of the stronger forms of Testosterone. this is because it as a single ester this in it’s self makes it a very fast acting compound. With longer acting compounds like Testosterone Enanthateyou lose part of the ester the body can break it down but with Testosterone Propionate the body hasn’t enough time so you get the full ester. this can be some what of a pain because you need to inject it more frequently. but the up side is you can control the exact amount that goes in. this not only cuts down on side effects of water retention it also cuts down on most steroid related side effects because the body hasn’t enough time to react. In my opinion the strongest stack to gain mass lose fat and also gain strength is to use Testosterone Propionate and Trenbolone Acetate. In my 20 years of bodybuilding Ive never heard one complaint of “I can’t feel anything” from the first Hour of using it you can feel it with all steroids it takes time but for short ester compounds time doesn’t seem to make much of a difference.