S-23 (Mastorin) 25mg

Description

S 23, also known as Mastorin, is a selective androgen receptor modulator (SARM) designed to bind with high affinity to androgen receptors in muscle and bone. It’s particularly known for promoting muscle hardness, vascularity, and fat loss—making it a popular choice during cutting phases or pre-contest preparation. Compared to other SARMs like Ostarine (MK 2866) or Ligandrol (LGD 4033), S 23 is significantly more suppressive and potent.

Most users cycle S 23 at 10–20 mg/day for 6 to 8 weeks. Due to its half-life (12 hours), split dosing may help maintain more stable blood levels. It is commonly stacked with other SARMs such as Cardarine (GW501516) for enhanced endurance and fat loss synergy. Because of its powerful binding affinity, this compound is best suited for experienced users.