What is Boldenone Undecylenate (Equipoise)?

Boldenone Undecylenate, widely recognized by its popular brand name Equipoise (EQ), is an injectable compound originally developed for veterinary use.1 Structurally, it is a derivative of testosterone, characterized by strong anabolic and moderately androgenic properties.2 It has become a favorite in the athletic community for promoting steady, high-quality gains.