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Myostine (YK-11)


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Buy Myostine (YK-11) for Sale

YK11 (Myostine) is a SARM that inhibits the activity of myostatin. Animal studies have shown that it increases the expression of Follistatin, a compound made of protein and sugar molecules. When Follistatin levels are raised, inhibition of myostatin occurs, resulting in muscle growth.

Primary cell-based studies have suggested that YK11 may enhance bone growth, reverse muscle wasting, and suppress the levels of pro-inflammatory cytokines in the bloodstream. YK11 isn’t approved by the FDA for human consumption. It is only available for laboratory research use.


What is YK11?

YK 11 is a selective androgen receptor modulator that inhibits the activity of myostatin in muscle and bone tissue. Myostatin is a natural protein that inhibits muscle growth. Its inhibition has been linked to increased muscle mass and strength in animal studies.

Preclinical studies have shown that YK11 could suppress the level of pro-inflammatory cytokines. These are proteins that cause inflammation in response to infection or injury to repair the damaged tissue. But too much inflammation could cause chronic diseases.

One of the unique features of Myostine is that it is a partial agonist of the androgen receptor. This not only distinguishes it from SARMs like Ostarine, which are full agonists of the androgen receptor. It also sets YK 11 apart from traditional anabolic steroids. [R]

Such selectivity for androgen receptors could enable YK 11 to provide the desirable benefits of anabolic steroids, while avoiding undesirable side effects. However, in the absence of even a single clinical study on YK 11, more research is needed to verify this.


How does YK11 Work?

YK 11 works by inhibiting myostatin. It does that by raising the levels of follistatin in muscle cells. Follistatin is a protein that blocks the action of myostatin, with several studies suggesting that raised Follistatin levels lead to rapid muscle growth. [R]

YK 11 may also expedite bone growth by increasing the activity of cells (osteoblasts) involved in the formation of bone tissue, per cell-based studies. However, in the absence of clinical studies, it’s unclear whether these effects would extend to humans. [R]


YK 11 Research

YK11 has been the subject of several animal studies examining its effects on muscle mass, bone health, and body fat. Here are some key findings about the possible effects of this myostatin inhibitor:


1) YK11 and Muscle Growth

A preclinical study has reported that YK11 is incredibly potent at inducing myogenic differentiation, one of the critical steps in muscle development. [R]

The study further reported two key findings. The first of which was that YK11 activated Follistatin protein to exert its anabolic effects. Another important result is that YK11 may be more potent than DHT in inducing myogenic differentiation in the body.

The second finding is incredibly significant, as DHT plays a major role in muscle growth.


2) YK11 and Bone Growth

A cell-based study has highlighted various possible ways YK11 could strengthen bones.

The study reported that YK11 activated protein kinase B, enzymes that, when activated, send signals to stimulate bone growth. Another thing that YK11 reportedly did was increase the activity of a protein (osteoprotegerin) that regulates bone density. [R]

Additionally, YK11 was shown to accelerate the proliferation of osteoblasts (cells that make bone tissue), which is the first step in the formation of bones. On top of that, YK11 reportedly promoted the activity of alkaline phosphate (ALP), helping bones mature. [R]


3) YK11 and Body Fat

A study involving septic mice has reported that those animals who were administered YK11 experienced a significant fat loss compared to those who didn’t.

Another animal study has highlighted the possible linkage between the administration of YK11 and the reduction in body fat mass. It showed that myostatin deficiency (which YK11 brings about) causes a significant decrease in body fat and an increase in skeletal muscle. [R]


4) YK11 and Sepsis

Sepsis is the body’s extreme response to an infection. It causes excessive inflammation throughout your body, leading to organ failure, tissue death, and even damage.

An animal study reported that YK11 reduced the mortality rate in septic mice. YK11 was also found to decrease weight loss, increase total body weight, and revert muscle cell atrophy. These results suggest YK11 as a potential treatment for sepsis. [R]


Frequently Asked Questions

Does YK11 burn fat?

There is currently no evidence to suggest that YK11 burns fat. However, as with all research chemicals, more studies are needed to back or refute this assertion.


Is YK11 the strongest SARM?

YK11 is often touted as one of the most potent SARMs, but this claim is inaccurate. In several clinical studies, other SARMs like RAD140 and LGD-4033 have been shown to have similar or even greater anabolic activity in muscle tissue.


What does YK11 do to your body?

In the absence of any clinical study on YK11, it’s impossible to ascertain what effects, if any, this SARM would have on the human body. It is important to note that the FDA hasn’t approved YK11 for human consumption.


Does YK11 affect testosterone?

While YK11 is a SARM that can increase muscle growth and strength, it does not appear to affect testosterone levels significantly.


Where to Buy YK11 for Sale?

Research Chems the best place to buy YK11 online.

We have been around since 2023, supplying the highest-quality research compounds money can buy. Our products come with a 100% satisfaction guarantee, fast shipping, and great customer service to turn every customer into a repeat customer.



YK11 is a steroidal SARM that has been shown to inhibit myostatin. While no clinical studies have been conducted on this research chemical, preclinical studies have shown that it may stimulate an increase in muscle mass, strengthen bones, and reduce body fat.

Research Chems sells YK11 for laboratory research use only.


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