YK11 is short for (17-alpha,20E) 17,20-[(1-methoxyethylidene)bis(oxy)] 3-oxo-19-norpregna-4,20-diene 21-carboxylic acid methyl ester.

YK11 shows a lot of promise as an apt anabolic SARM. With the muscle growth potential it brings, it's as effective as anabolic steroids and prohormones without the unwanted side effects connected to the latter.

YK11 is a powerful SARM supplement promoting massive lean muscle gains which is a great benefit for those wanting to have an aesthetic and shredded physique.