YK-11 Powder (Myostine) for sale YK-11 Powder, also known as Myostine, is a research chemical belonging to the class of selective androgen receptor modulators (SARMs). The chemical name for YK-11 is (17a,20E)-17,20-[(1-methoxyethylidene)bis(oxy)]-3-oxo-19-norpregna-4,20-diene-21-carboxylic acid methyl ester, and it is typically available in powder form. The bigger, the better! Next lvl muscle yK-11 myostine ensures the fastest muscle growth. However, this substance is not a true SARM. It binds to androgen receptors, but has no effect on them. Growth factor 8 is inhibited by myostin, which creates more muscle mass. With a single cycle, users notice a significant decrease in body fat and muscle growth of up to 7 kilos!

• Prices listed are per gram
• Strong anabolic compound with fewer side effects than a steroid
• Improves recovery