Chemically, 4-AD is closer to testosterone than androstenediol (1-AD), and it acts as a weak potential agonist of the androgen receptor. On its own, 4-Androstenediol does not have a prominent androgen receptor binding affinity, but as a prohormone it converts to testosterone via the enzyme 3-beta hydroxysteroid dehydrogenase (3bHSD). Interestingly, although its bioavailability is fairly poor, it is still better than that of 1-AD (1-Androstenedione). Furthermore, just like in the case of 1-AD its half-life is also relatively short. This means that large and frequent doses will be required to see the anabolic effect from 4-AD. Due to the fact that 4-AD is usually referred to as a “wet” compound, it is used more often in bulking cycles, rather than the cutting ones.
Get more information on this compound including dosage advice at SARMs Central.