Equipoise-Steroid Injection. Boldenone is an anabolic steroid made from the compound Boldenone Undecylenate. This steroid has been in use for veterinary medication amongst horses. People know that this drug boosts energy in horses before any race or competition. Order here Boldenone Undecylenate Injection is a steroid that many bodybuilders and athletes have used for years. A popular steroid, it promotes lean muscle growth, improves endurance, and increases appetite. The active ingredient in Boldenone Undecylenate Injection is boldenone undecylenate, which is a derivative of testosterone.