test-100 is pure 1-testosterone
T-Bol is de voorloper:
1,4-androstadienedione is a steroidal precursor of the potent anabolic steroid Boldenone. If you are not familiar with boldenone, it is the same anabolic steroid found in the injectable veterinary preparations Equipoise®, Ganabol, Ultragan and Equi-gan. The activity of boldenone is highly anabolic, with only low to moderate androgenic potency. It is likewise an efficient builder of muscle tissue, although is much less apt to produce androgenic side effects (oily skin, acne, hair loss, body/facial hair growth) compared to an androgen such as testosterone. Unlike other steroidal precursors however, 1,4-androstadienedioneis highly active when taken orally. In fact, it is without question the most potent oral anabolic steroidal precursor ever to be developed!
5-alpha androstanediol is a precursor to dihydrotestosterone and it's the most explosive form of testosterone found in the body, displaying 3-4 times more ability to bind to androgen receptor sites than straight testosterone! Now, obviously, any compound that binds to testosterone receptors 3-4 times better than regular testosterone is going to promote very rapid mass and incredible strength gains...but what really sets 5-alpha androstanediol apart from all other androgen compounds (prescription or otherwise) is its unique molecular structure that can't aromatize and convert to estrogen!! You guessed it! It can't cause gyno, water retention, or body fat elevations...or any other nasty side-effects associated with estrogen. Another huge factor that places 5-alpha androstanediol on a completely different level is its equally impressive ability to free testosterone levels by also competing with serum binding proteins which act to restrict steroid hormones from being active. So basically, more of your testosterone will now "free up" so it can do what it's intended to do like build more muscle, burn more fat and dramatically increase your strength.