YK-11 Pros and Cons for Extra Muscle Growth!

Myostine, Myostane, YK11 is an innovative supplement from the group of SARMs, which helps unlock the genetic code and opens new horizons for muscle growth, fat burning, and improved body composition. YK-11’s action is based on blocking myostatin (myostatin inhibitor), an inhibitor of muscle growth in the human body. When you are on a Myostane solo cycle, anabolic indicators go off the scale. It is important to note that there are no side effects associated with AAS. Keep reading to learn about all of YK-11’s pros and cons for bodybuilders.

YK-11 was made so that everyone could achieve desirable muscle volume without the use of hormones. It’s happened to everyone: you go to the gym, you follow the diet, you lift heavy, you recover enough, and the muscle grows. But one day, the process stops, and no training plans, diets, or exercises do not help. The innovative product will help “break through the plateau” for almost any athlete.

YK-11 is a dihydrotestosterone derivative, 5α-DHT. But while DHT, when ingested, simply replaces what our hormonal system produces and accelerates muscle growth, 5α-DHT works as a SARM. Read the whole YK 11 review to know the pros and cons of using it.

How is YK11 blocking myostatin?

YK-11 Myostatin Inhibitor

Old-timers of “the iron world” know exactly what a regulatory protein called myostatin is. Those hearing about this peptide for the first time should get to know it better. Myostatin has a very specific function not only in the human body but also in many mammals. It blocks muscle growth. You heard it right, myostatin blocks muscle fiber growth.

Myostatin’s only function is to slow the growth of muscle mass so that the animal or person does not become a pile of unwanted muscle that cannot be fed and that ligaments and joints cannot hold. Experiments on animals have shown that turning off myostatin receptors leads to an increase in lean muscle mass. People have been known to have a mutation in the gene encoding myostatin. All of them were characterized by abnormal (strong) development of muscle mass.

What is the selective androgen receptor regulator YK11 doing with myostatin?

The mechanism of action of these SARMs is implemented through receptors for androgens, and the result of YK11’s interaction with these receptors is the production of follistatin, another signaling protein whose task is to deactivate myostatin.

It turns out that YK11 stimulates the synthesis of muscle growth “inhibitor blockers”. That is, it increases the level of a regulator in the muscle that suppresses the activity of another regulator that blocks muscle growth. The result of this double action is obvious: rapid muscle mass gain!

Myostatin is a reliable aid for classic SARMs like Ibutamoren, and Ligandrol. But it can also be taken solo since it has none of the side effects of dihydrotestosterone.

The substance increases the production of protein kinase, the enzyme responsible for strengthening bones. It promotes not only the growth of muscle mass but is also a means of preventing osteoporosis.

The Effects of Myostine (YK11) on Bodybuilding

YK11 is the newest “drug” in the world of sports pharmaceutics, but the results of the first experiments are impressive. When comparing the effects of identical doses of testosterone and YK11 in laboratory conditions, it was found that anabolic processes in muscle cells were greater when YK11 was used. In other words, YK11 is at least as strong as testosterone in anabolic activity without the side effects of AAS.

Even a solo cycle of YK11 increases muscle, which is demonstrated by the increased anabolic markers in the muscle tissue. Experiments have shown that blocking myostatin receptors leads to a dramatic increase in lean mass with no increase in fat tissue. Moreover, myostatin blockers have a lipolytic effect, which is manifested in accelerated fat burning.

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Using Myostane in bodybuilding, fitness, and strength athletics:

  • mass gain;
  • slimming;
  • cutting;
  • getting ready for a competition;


Myostine is not suitable for the prevention of sports injuries. Myostatin blockage leads to accelerated growth of skeletal muscles, which precedes strengthening of joint and ligament apparatus, and this can increase the risk of injury.

The Pros of YK11 SARM

YK-11 benefits for bodybuilding

  • Rapid muscle mass gain
  • There is no water retention.
  • Results without “rollback” after the cycle;
  • Increased strength, endurance, and maximum power;
  • There was no increase in estrogen levels or risk of gynecomastia.
  • It does not inhibit the synthesis of endogenous testosterone;

No side effects are common with testosterone, dihydrotestosterone, and their synthetic derivatives.

The Cons of Taking YK-11 SARM

Here are the main disadvantages of using the SARM:

  • There is limited research on YK-11’s long-term effects on human health.
  • It may cause liver damage and other adverse effects.
  • It is not approved for human use by the FDA.
  • It may cause suppression of natural testosterone production.
  • It may cause acne and other skin issues.

The Right Dosage: How to Take Myostatin Inhibitor? 

The recommended YK 11 dosage is 2 capsules per day, divided into two doses of 1 capsule. The cycle duration is 4 to 8 weeks.

Is YK-11 SARM and Anabolic Steroid?

YK-11 is a selective androgen receptor modulator (SARM) that selectively binds to androgen receptors in muscle and bone tissue, increasing muscle mass and bone density. It works by stimulating the production of follistatin, a protein that inhibits myostatin and limits muscle growth.

On the other hand, anabolic steroids are synthetic versions of the male hormone testosterone that promote muscle growth, bone density, and strength. They bind to androgen receptors in various tissues, including muscle, bone, and the liver, leading to increased protein synthesis and muscle mass.

The main difference between YK-11 and anabolic steroid is that YK-11 is more selective in its action, targeting only muscle and bone tissue, while anabolic steroids affect various tissues in the body. YK-11 has fewer side effects than anabolic steroids, making it a safer alternative for bodybuilding and athletic performance enhancement.

The Studies

YK-11 is a synthetic steroidal selective androgen receptor modulator (SARM) that has been studied for its potential to prevent muscle loss and decrease fat mass. It has also been described as having myostatin inhibitor-like properties.

While it has shown promise in animal studies as a potential treatment for sepsis-induced muscle wasting, there needs to be more scientific data on its metabolism because it is an experimental drug candidate and a non-approved substance for humans.

However, there are concerns about the lack of testing and licensed researchers studying YK-11.


Is Myostatin Legal?

The substance is highly potent and it’s on WADA’s doping list, so athletes who compete in Olympic sports should be cautious when taking it.

How does YK-11 work?

The active ingredient binds to androgen receptors and triggers the synthesis of follistatin, which blocks myostatin.

You can achieve the following results:

  • Increased muscle mass without the use of anabolic steroids;
  • Reduced recovery time;
  • Increased strength and speed performance during training;
  • Bone strengthening, fracture and impact injury prevention.
  • increased the time between muscle fiber contractions before failure;
  • Improvement of hematopoiesis

How to use it?

Take 1 capsule of the daily dosage (5 mg) in the morning and afternoon, preferably before a workout.

Half Life Time of YK-11

This SARM has an extremely long half life, lasting one complete day. This indicates that a single daily dose is more than enough to achieve the required physical results.

Do I still need PCT after taking it?

Many will say that you do not need PCT at all after the SARMs cycle. I think it will depend on your after-cycle testosterone level.

Should a beginner start with Myostine? YK-11 Stacking.

Some athletes think that the YK-11 is good for beginners, but that’s not quite right. If your goal is maximum strength and ultimate mass growth, you should start with Ligandrol, and stack Myostine during the first 2-3 cycles and beyond. This will allow you to really “break through the limit” and better realize your potential. Adding S23 to this stack is great for drying.

When it comes to testosterone suppression, stacking YK-11 and RAD 140 Testolone is one of the worst things you can do. Both of these, however, might be utilized separately!

Due to liver toxicity, do not combine YK-11 with other methylated AAS drugs such as Anavar, Winstrol, or Anadrol.

Dosages and Cycle Length for YK 11

You should start with a dosage of 5 mg and see how the body responds to Myostine. You should understand that the same principle applies to the use of all SARMs. If it is possible to get by with minimal doses, you should do so.

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