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YK-11 is a synthetic selective androgen receptor modulator (SARM) that is known for its potential to promote muscle growth and enhance physical performance. While it is often categorized as a SARM, YK-11 may also exhibit some properties of a myostatin inhibitor, which further contributes to its muscle-building effects.

Here are the key details about YK-11
Chemical name: YK-11
Classification: Selective Androgen Receptor Modulator (SARM)
Half Life: Approximately 24 hours
Potential benefits: Increased muscle mass, improved strength, enhanced bone density
Recommended dosage: 5mg-15mg/ED
Acne: Possible
Water retention: Limited information available
HBR (Hair Loss): Possible
Hepatoxicity (Liver Damage): Mild
Aromatization (Conversion to Estrogen): Limited information available
Anabolic activity index: Not applicable (not anabolic steroid)
Androgenic activity index: Not applicable (not androgen)

YK-11 is believed to work by selectively binding to androgen receptors in muscle tissue, which may lead to an increase in muscle growth and strength. Additionally, YK-11 has been reported to promote bone health and density, potentially offering benefits beyond muscle development.