S4 IM

Andarine (S4) or Acetamidoxolutamide, is a SARM (Selective Androgen Receptor Modulator). But the idea for S-4 didn’t start out as many believe.

It wasn’t an attempt to create a safer version of steroids or any of that nonsense people use to sell anabolics.

S-4 started out as a new development for male contraceptives and showed promising results like decreases in spermatogenesis and huge boosts in male libido. For any of you who have had trouble getting your wife pregnant while on sarms…you’re welcome.

However, when researchers began experimenting on mice with S4, they discovered interesting findings about how this first generation SARM affected castrated lab mice.

Not only did Andarine increase the production of muscle mass and calcium for bone density, but was COMPLETELY SELECTIVE in its tissue growth!

As studies continued, many of these research trials resulted in astonishing outcomes creating a benchmark for even more research.