TREN A100 is a very well-known injectable anabolic steroid, and milligram for milligram it is the most powerful anabolic steroid commercially and conventionally available. It is an anabolic steroid that tends to invoke both intimidation as well as amazement among those who read about it. It is an incredibly fast acting form of the most effective drug ever manufactured and it is highly valued for its ability to increase muscle hardness, definition and raw strength without unwanted water retention and fat mass gains.