EQ-Tren 400 is a steroid injection that contains Boldenone Undecylenate and Trenbolone Enanthate. Boldenone Undecylenate is effective for both cutting and bulking cycles, due to its well balanced effects. It aromatizes very little, and increases protein synthesis and red blood cell count, meaning that nutrients are transported throughout the body much more effectively. Trenbolone Enanthate is the most powerful overall steroid in use by bodybuilders today. It is both highly androgenic and anabolic, and is chemically unable to aromatize, meaning that the muscle produced by this drug is very hard and defined.