YK-11PRO (Myostine) 10mg - 60 caps

  • Myostatin inhibitor
  • Increase muscle mass
  • Boost strength & endurance
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YK11 chemical structure YK 11 is very similar to the structure of steroids, but does not mean that this compound is a steroid. The compound is classified into the group of so-called SARM or selective, androgen receptor modulators. Due to its structural structure - the steroid skeleton is one of the strongest and most effective SARMs. YK11 attaches to the androgen receptor, and this causes the muscle cells to start producing more anabolic factors, the ultimate process of which is muscle growth.

Unlike other SARMs, which have limited androgenic activity, YK 11 works more effectively. Scientific research clearly shows that muscle cells produce much more anabolic compounds after using 500 nmol YK 11 than after the same testosterone dose. YK 11, like other SARMs, causes increased muscle cell growth.

The compound is very effective for people who want to gain large gains of muscle mass, as well as for those who care about keeping their muscles without excessive fat accumulation in the body. The effects of using YK11 are impressive not only because of the ability to build muscle mass but also by its ability to reduce the overall amount of fat in the body. It turns out to be particularly helpful for people whose genetics significantly prevents the achievement of significant muscle mass. This is because the compound is a myostatin inhibitor.

Myostatin is a protein that inhibits muscle growth in the body by inhibiting the formation of new muscle fibers. Some naturally have a large amount of this protein in their body, and then it is difficult to obtain the desired weight. Thanks to YK 11 you will naturally develop your muscles to the desired level.

To sum up, YK 11 is undoubtedly one of the best SARMs currently available on the market. The compound promotes the growth and development of lean muscle mass. Unlike steroids, YK11 acts selectively only in specific cells. To ensure cosmic results in the gym, anyone who accepts this relationship should stay active and exercise regularly. As long as you follow these recommendations, you have brick effects in the form of a great figure without unnecessary fat.

YK-11 is one of the newest SARM on the market – it is the most innovative in action formulation, among this group of products. It has a very powerful genetic potential to build muscles! As the ligand having some tissue specificity and high affinity for AR (greater than in the case of testosterone or DHT), it is capable of strong binding to the selected androgen receptors. Nevertheless, its operation does not fully coincide with the assigned SARM, as evidenced by its inability to the induction of N/C, and therefore, just a partial agonist of mentioned receptors.


YK-11 acting as a strong androgen with minimal undesirable side effects, also acts as an effective inhibitor of myostatin.

Regardless of the impossibility of full activation of the androgen receptors, it is able to increase the level of the main myogenic regulatory factors (MRFs), in particular: MyoD, Myf5 and myogenin, in a greater part than DHT does. YK-11 enables a process of myogenesis, mainly by increasing the concentration of follistatin (FST), through which it limits the activity of myostatin, a protein limiting the extension muscle process over its genetic potential.


As a dietary supplement, take 1 caps 1-2 times per day for 6-8 weeks. Do not exceed 2 caps in a 24 hour period and do not take for more than 8 weeks continuous use without a 4 week break between cycles.


Consult your physician before using this product. It is not intended for use by individuals under 18 years of age. Do not use if you have any medical condition, including but not limited to, prostate hypertrophy, cancer, heart, liver, cardiovascular, kidney, thyroid disease, high blood pressure, low HDL, or are taking any other prescription drugs. Do not use if you are pregnant or nursing. Discontinue use if you experience any adverse reaction to this product. Store in a cool, dry place, tightly closed.

Data sheet

Serving per container:
60 caps
Serving size:
1 caps
350 mg
Vitamin E TPGS
10 mg
YK-11: 10 mg
(17α,20E)-17,20-[(1-methoxyethylidene)bis(oxy)]-3-oxo-19-norpregna-4,20-diene-21-carboxylic acid methyl ester

Specific References

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YK-11PRO (Myostine) 10mg -...


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