Mastorin (S-23) is a cutting-edge pharmaceutical support agent from the group of Selective Androgen Receptor Modulators (SARMs). S-23 promotes lean mass gain, accelerates fat burning, increases muscle density, dryness, and definition, and enhances vascularity. It can be used in foundational and shaping training cycles, but considering its effects, S-23 is most effective during competition preparation.
This is a legal substance that is not an anabolic androgenic steroid (AAS), but it has a high affinity for androgen receptors, exhibiting anabolic, lipolytic, and strong anti-catabolic activity.
