1-Testosterone cyp (abbreviated as Dihydroboldenone), also known as 4,5α-dihydro-δ1-testosterone or 5α-androst-1-en-17β-ol-3-one, as well as dihydroboldenone, is an androgenic-anabolic steroid (AAS) that differs from testosterone by having a 1(2)-double bond instead of a 4(5)-double bond in its A ring.
1-testosterone cyp or DHB for short, is an anabolic steroid that has some unique properties of interest to bodybuilders. Interestingly, in spite of the fact that the name can be confusing, in no way is DHB testosterone. In fact, it is simply the 5alpha reduced form of Equipoise (boldenone), which acts in a completely different way. Therefore, you can think of it as a dihydrotestosterone (DHT) version of equipoise.