What is YK-11?

What is YK-11?

If you're interested in building muscle and strength, you've probably heard of YK-11, also known as Myostine. YK-11 is a selective androgen receptor modulator (SARM), but it's also steroidal in structure because it's a DHT-derived compound similar to testosterone or Winstrol. In this blog post, we'll explore what YK-11 is, how it works, and its potential benefits and risks.

What is YK-11?

YK-11 is a relatively new compound in the bodybuilding world, and its mechanism of action is still being studied. However, what we do know is that YK-11 is a myostatin inhibitor. Myostatin is a protein naturally produced by muscle cells in the human body. This protein plays a crucial role in muscle movement and impedes muscle growth and strength, ensuring that muscles do not get too large as to inhibit their movement.

How does YK-11 work?

YK-11 works by inhibiting myostatin, which allows muscles to grow and become stronger. When myostatin levels are high, muscle growth is inhibited, and muscle mass may even decrease. YK-11's ability to inhibit myostatin makes it a popular compound among bodybuilders looking to gain muscle and strength.

Potential benefits of YK-11

In a mice study, rats that were injected with YK-11 produced 50% more muscle mass than the control mice. While human studies are limited, anecdotal evidence suggests that YK-11 can help bodybuilders gain muscle mass quickly and effectively.

Potential risks of YK-11

While YK-11 may have potential benefits for bodybuilders, it's essential to consider the potential risks. One of the biggest concerns with YK-11 is its lack of long-term safety data. As a hybrid SARM/steroid, there's not much research to suggest its safety. We don't know the long-term effects of having a compound like that in the body. Additionally, when you inhibit myostatin, tendon and collagen repair is also inhibited, which is why a cycle of only 8 weeks is suggested.

It's also worth noting that YK-11 is considered a banned substance in some sports organizations. Using YK-11 could result in disqualification from competition and other penalties.

It's important to consult with a medical professional before using YK-11 or any other performance-enhancing substance. A qualified healthcare provider can help you understand the potential risks and benefits of YK-11 and determine if it's right for you.


YK-11 is a compound that has gained popularity among bodybuilders looking to gain muscle and strength quickly. While it may have potential benefits, it's essential to consider the potential risks and consult with a medical professional before using it. If you're looking to build muscle and strength, there are plenty of other safe and effective methods to achieve your goals, such as eating a balanced diet, lifting weights, and getting plenty of rest and recovery.



SARMs are not approved for human use and you should consult your doctor before experimenting with any sarm. We do not reccomend the use of sarms.  We do not recommend using these products without first consulting your doctor. Many health clinics prescribe these. All talk of these and other compounds is for entertainment purposes only! SARMs are not meant for human consumption, and I do not condone their use. Please do not use SARMs or any other agent I discuss or start any workout program without first talking with your Doctor.

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