This SARM is currently being studied as a potential male contraceptive, due to it’s ability to temporarily inhibit spermiogenesis in male users. In early trials, researchers took note of pronounced effects on muscle mass and strength by those who were given S23. The underground fitness community tends to utilize S23 in bulking cycles where the primary objective is to increase muscle mass in a short period of time.

You can learn all about S23 in the articles below.

S23 is best for:

  • Bulking up in a short period of time
  • Use as a temporary male contraceptive
  • Cycles where the main goal is to increase mass

80 %
Side effects
55 %