YK-11

Also known as: Myostatin Inhibitor SARM

SARM/Myostatin inhibitor hybrid

What is YK-11?

YK-11 is a synthetic peptide classified as a SARM (Selective Androgen Receptor Modulator) and a myostatin inhibitor hybrid. It is designed to enhance muscle growth and improve physical performance by selectively targeting androgen receptors in the body. As a member of the anabolic and myostatin peptide category, YK-11 has garnered attention for its potential to promote muscle hypertrophy while inhibiting myostatin, a protein that restricts muscle growth.

This peptide is notable for its dual action, combining the benefits of SARMs with myostatin inhibition, making it a subject of interest in the fields of bodybuilding and athletic performance enhancement.

How It Works

YK-11 functions by binding to androgen receptors, which are crucial for muscle development and growth. When activated, these receptors stimulate anabolic processes that lead to increased muscle mass and strength.

Myostatin Inhibition

In addition to its SARM properties, YK-11 inhibits myostatin, a protein that limits muscle growth. By reducing myostatin levels, YK-11 may allow for greater muscle development than would typically be possible, making it a unique compound in the realm of performance enhancement.

Research Uses

  • Muscle Hypertrophy: Investigated for its ability to promote muscle growth through androgen receptor activation.
  • Strength Enhancement: Studied for potential improvements in strength and physical performance.
  • Myostatin Regulation: Research focused on its role in inhibiting myostatin to facilitate muscle gain.

Effects

  • Increased Muscle Mass: Users report significant gains in muscle size due to enhanced protein synthesis.
  • Improved Strength: Observations indicate that YK-11 may lead to notable increases in strength levels during resistance training.
  • Enhanced Recovery: Some studies suggest potential benefits in recovery times post-exercise, allowing for more frequent training sessions.

Summary

YK-11 is a unique peptide that combines the properties of a SARM with myostatin inhibition, making it a valuable compound for research into muscle growth and performance enhancement. Its dual action offers potential benefits for those studying anabolic processes and muscle regulation.

Last updated: Feb 25, 2026