Benefits of YK-11?

YK11: What Is It Used For? plus Concerns Regarding Its Safety and Adverse Effects

There is a widespread belief among bodybuilders that YK11 holds the secret to generating rapid muscular development with minimal adverse effects. YK11 is being marketed as a super-SARM; however, this medication has not been licenced, it is not well understood, and it is likely harmful. Where do the dangers lie? Discover more by reading on.

What precisely is YK11?

YK11, also known as Steroid-SARM Hybrid, is a newly developed synthetic steroid that is based on 5–dihydrotestosterone (DHT), which is a hormone that occurs naturally in the human body. DHT is a more potent version of testosterone that binds to androgen receptors in the prostate, sex organs, hair, and liver. DHT is responsible for male pattern baldness.

Bodybuilders are becoming more interested in YK11 because they feel it will assist them in rapidly building muscle with minimum adverse effects; however, this view is not grounded in the evidence that is now accessible. Despite the fact that the YK molecule has more in common with steroids than it does with SARMs, [2] it is frequently and incorrectly categorised as a non-steroidal SARM.

The results of several experimental cell investigations suggest that YK11 may improve bone health while also increasing muscle growth [3, 4].

Some bodybuilders who have tried YK11 claim seeing significant increases in muscle mass and a reduction in body fat with just minor adverse effects. YK11, on the other hand, has not even been tested on animals yet, and very little is known about its potential side effects. Utilizing research compounds that have received so little attention from scientists is fraught with grave peril. Because of this, employing YK11 is something that we highly advise against doing.

The use of YK11 in professional sports, along with all other anabolic steroids and SARMs.



  • May stimulates the creation of new muscle.
  • It may increase the amount of fat that is burned.
  • May result in increased bone density


  • There is insufficient evidence to determine whether or not it is safe or effective.
  • Steroidal structure (not a typical SARM)
  • Testosterone suppression
  • There were no tests on humans or animals.
  • Unknown dangers over the long run
  • Insufficient information regarding risk.
  • Have the potential to cause additional adverse consequences not yet identified

Is It a SARM? 

SARM is a term that is sometimes used by researchers and bodybuilders to refer to YK11 (selective androgen receptor modulator). This may lead to confusion because other SARMs are not the same as YK11.

The chemical structure of DHT is modified in order to produce YK11, which is a steroid. In contrast, every other kind of SARM has a structure that is not steroidal. Both YK11 and SARMs operate in a distinct manner within the body and may cause a variety of adverse effects [2, 6].

Research done on cells demonstrates that YK11 has an impact that is selectively exerted on androgen receptors. This indicates that the SARM classification is an accurate way to characterise YK11 [2].

Because this category of medications is very recent, there is no predetermined naming system in place for them.

How does it come into effect?

YK11 has a molecular structure that is comparable to that of DHT, and it also binds to androgen receptors in a manner that is analogous to DHT. DHT is a hormone that occurs naturally in the body and has an important role in hair growth, the health of the prostate, and the development that should occur throughout puberty.

According to a number of bodybuilding resources, YK11 is considered to be one of the most potent SARMs currently available. However, the research showed that the androgen receptors that YK11 interacts with are only partly activated. This type of restricted activation boosts the activity of catabolic genes, which are responsible for the breakdown of muscle [2].

In a recent cell research, the specific method that YK uses to create muscle was revealed to be an increase in follistatin levels. Follistatin is a protein that occurs naturally and has the ability to inhibit the action of myostatin. Myostatin is normally responsible for preventing muscles from becoming too big. In comparison, no other selective androgen receptor modulators (SARMs) demonstrate myostatin inhibition [3].

According to the findings of previous cellular research, YK11 may also stimulate bone development by altering a route that is similar to DHT. Nevertheless, it is unknown if this process would be applicable to the systems of live animals or people [4].

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The following aspects of YK11 are now the subject of research: 

1) Muscle size

Studies conducted on cells suggest that YK11 stimulates muscle development by elevating levels of follistatin and, as a result, blocking the action of myostatin [3].

Neither animals nor humans have been tested for the YK11 virus. As a result, there is not adequate evidence to support the utilisation of YK11 for any purpose.

Myostatin can be inhibited by YK11, which may result in increased muscle development. There are no studies, either on humans or animals, that can corroborate this.

2) Might Make Bones More Robust

The balance of a person’s sexual hormones is critical to the upkeep of healthy bones. In a manner analogous to that of steroids and SARMs, it is possible for YK11 to improve bone strength via binding to estrogen receptor in bone grafts.

YK11 caused an increase in the amount of activated protein kinase B (PKB) found in cells; this kind of PKB is responsible for sending signals that promote enhanced bone formation [4].

In the same vein as other SARMs, YK11 is presently being researched for possible applications in the field of bone health. This might make it useful for older people who deal with both bone density frail; however, we have emphasise once more that there are presently no human or even animal studies to support this up [7]. This could make it important  for older individuals who suffer with both muscle strength frailty.

The possibility that YK11 might aid in the prevention of fractures, particularly in the elderly, is the focus of current study; however, this line of investigation has not even reached the stage of animal testing.

YK11 for the Bodybuilding Community’s Reports and Feedback

Keep in mind that YK11 has not even been the subject of any research done on humans or animals. We are giving some user experiences here in order to explain the reasons why some individuals use YK11 and to investigate some stories of potential side effects. None of these things can take the place of conducting accurate clinical tests.

The latest SARMs are usually a hot issue in the bodybuilding community.

According to the evaluations that are favourable of YK11, it can significantly improve muscle growth in as little as a week. However, the fact that different persons use YK11 at varying quantities, for varying amounts of time, or in combination with other SARMs casts doubt on these assertions. Some people have reported that there is absolutely no benefit.

Some people believe that YK11 produces outcomes that are comparable to those of other SARMs. If the outcomes of taking YK11 and another SARM were the same, many people would choose to take the other SARM since it is supported by more research.

Experiments have been done by bodybuilders using YK11 in both the bulking and cutting phases of their training. Some users believe that it works wonderfully in both directions, namely by increasing the amount of lean muscle mass and decreasing the amount of fat.

All of these statements continue to be based solely on anecdotal evidence. Users are advised to exercise caution because there is a paucity of data regarding the safety of YK11 as well as its long-term effects, and there have been no studies done on humans. Utilizing experimental substances like YK11 that have not been subjected to any kind of testing whatsoever is fraught with severe peril. Taking YK11 is something that we do not suggest doing for any purpose.

Some bodybuilders recommend YK11 as a reasonably risk-free method for reducing body fat and increasing lean muscle mass, while others claim that it does not work. In addition, there are no studies that can be found to support these claims, and we have no idea whether or not YK11 is both safe and effective.


According to many anecdotal reports, the most usual dosage is 10-15 milligrammes, which is then split into two equal daily dosages. However, a safe and effective dosage of YK11 has not been identified since there have been no clinical trials of sufficient quality to do so.

According to reports, bodybuilders use dosages ranging from 5 mg to 30 mg, which are cycled for a duration of between 4 and 8 weeks. Women report using 0.5 – 2 mg per day. Because there are no scientific studies accessible, this conclusion cannot be supported by any form of data.

The majority of users take YK11 by mouth, although others have injected it into their muscles.

Some users have reported stacking YK11 with LGD-4033 or RAD140 and utilising a lower dose of YK11, often between 5 and 10 milligrammes per day. More the use of only one unauthorised research chemical at a time is considered risky, and the use of many unapproved research chemicals at once is even worse. Not only do we lack sufficient knowledge regarding the safety profile of each of these medications, but we also lack knowledge regarding how these medications may interact with one another within the body. We do not advocate utilising any of the study chemicals alone, much less in combination.

Because not enough research has been done on the subject, YK11 does not have a dosage that has been proven to be both safe and effective.
Anabolic agents, including any and all SARMs, are not permitted to be used in professional sports according to the guidelines. Competitions cannot allow the use of YK11 under any circumstances [5], regardless of whether it is classified as a SARM or a synthetic steroid.

The anti-doping test is presently in use, and it has the ability to identify YK11 metabolites for up to two days after usage [8].

Restrictions and Notes of Caution

The study that has been done on YK11 thus far is limited. There is no evidence that it has been tested on either animals or people. 

Evaluation of YK11’s efficacy and safety will be possible only once more study has been conducted. Using a research chemical that has not been tried, has not been approved, and about which we know nearly nothing is fraught with great peril. Putting your health in jeopardy in this way is something that we highly advise against doing.

Disclaimer: Using YK11 for any purpose is something that we highly advise against doing. This is an unapproved medicine that, in the few trials that are currently available, has been shown to induce substantial side effects. A number of our readers who were already using the medication asked us to write a piece on it, and in response, we are merely presenting information that is already there in the clinical and scientific literature.

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