If you’ve hit a plateau and are looking to achieve serious muscle gain, YK-11 can give you a helping hand. Promising mass muscle growth and enhanced muscle cells, this compound has the potential to maximise your performance, whether you’re a bodybuilder, professional athlete, or regular gym goer.

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Product Description

With each use, you’ll notice improved strength and supercharged endurance as you bulk up. But YK-11 can also aid in recovery, ensuring you never have to compromise time spent building muscle.

Key Benefits:

  • Aids in bulking
  • Enhances muscle cells
  • Maximises performance potential
  • Supports higher endurance
  • Significantly improves strength
  • Supports proper recovery

Product Information

YK-11 is a synthetic steroidal selective androgen receptor modulator (SARM) which also functions as an active myostatin inhibitor. It tricks the body into a growth phase without limiting its growth.

The science

YK-11 is chemically known as YK11; (17α,20E)-17,20-[(1-methoxy ethylidene)bis(oxy)]-3-oxo-19-nonpregnant-4,20-diene-21-carboxylic acid methyl ester. What makes it popular is its dual action mechanism – both as a SARM and a myostatin inhibitor, YK-11 allows experimenting and researching with a compound that very effectively acts as both and is significantly more anabolic & androgenic than for example a steroid such as dihydrotestosterone (DHT). It doesn’t have some of its adverse effects, such as hair loss and prostate enlargement while providing many benefits.

Unlike traditional Anabolic Androgenic Steroids (AAS), SARMs and YK11 in particular, have highly anabolic effects but they are very selective in how they work. They are more targeted, interfere less with normal body functions and as such have fewer side effects than AAS.

YK-11 gives some very exciting possibilities however the case is complicated yet as research data on it is still very limited.

Key benefits

YK-11 SARM is a powerful compound, often referred to as ‘super SARM’ by athletes and bodybuilders who have tested it. They most often use it as it offers benefits such as:

  • Rapid recovery;
  • Gaining muscle mass faster and easier;
  • Enhancing muscle cells;
  • Helps increase endurance & provides exceptional strength;
  • Great for regulating cardiovascular system functions according to some users;
  • Fewer side effects due to the selective ways they work compared to AAS.

Dosage protocol

Studies on YK-11 show that the recommended clinical dosage should be between 5-15 mg daily in one dose(or two divided doses if using the higher dose).

Bodybuilders & More experienced users usually take YK-11 in 5-15mg daily doses for an 8 weeks cycle.
Newbies – take 5mg daily for 6 weeks cycle
Women take YK-11 in 0.5-2 mg daily dose.


Some bodybuilders stack YK-11 with Ligandrol and Testolone while lowering the dose of YK11.
As YK-11 may cause mild testosterone suppression it’s good to try PCTing it with Nolvadex or Clomid.
Some users recommend for optimal results to stack it with RAD140, LGD-4033 or Andarine (as long as your YK11 dosage is no more than 5mg a day).


Store in a cool, dry place, away from direct sunlight.

Research links and references

  • Su Jin Lee, Amal Gharbi, Joo Eun Shin, In Duk Jung, Yeong Min Park, Department of Immunology, Laboratory of Dendritic Cell Differentiation & Regulation, School of Medicine, Konkuk University, Chungju, 380-701, Seoul, South Korea, Dandi Bioscience Inc, 6th Floor of Real Company, 66, Acha San-ro, Seongdong-gu, Seoul, South Korea https://www.sciencedirect.com/science/article/pii/S0006291X21000668#:~:text=YK11%20attaches%20to%20the%20androgen,increasing%20muscle%20growth%20%5B13%5D.
  • Kanno Y, Hikosaka R, Zhang SY, Inoue Y, Nakahama T, Kato K, Yamaguchi A, Tominaga N, Kohra S, Arizono K, Inouye Y (2011). Biological & Pharmaceutical Bulletin. 34 (3): 318–23
  • Kanno Y, Ota R, Someya K, Kusakabe T, Kato K, Inouye Y (2013). “Selective androgen receptor modulator, YK11, regulates myogenic differentiation of C2C12 myoblasts by follistatin expression”. Biological & Pharmaceutical Bulletin. 36 (9): 1460–5.

Product FAQ

YK-11 is a synthetic myostatin inhibitor in the family of SARMs. It is known as an agonist of the androgen receptor. Its action on the receptors has shown potential in muscle growth and anti-aging applications. YK-11 has been found to offer increased muscle growth, rapid recovery, highlighted endurance, and exceptional strength. Some subjects claim that YK11 is best for regulating cardiovascular system functions.

Subjects can expect to see an increase in lean muscle and strength and improved endurance. It can also reduce body fat levels and help with weight loss. Through its action on the androgen receptor, YK-11 may provide additional anti-aging benefits. YK 11 is known for its effects on androgen receptors, making it an ideal choice for athletes serious about building muscle mass and enhancing their performance.

The YK11 receptor binds to the androgen receptor with the same affinity as testosterone. Contrary to the traditional SARMs, YK11 can target both anabolic and androgenic receptors. This makes it ideal for subjects looking to build muscles while reducing body fat.

YK11 has been proven to dramatically accelerate the expression of FST, cell proliferation, selective regulation of myogenic genes, and mineralization. By selectively activating Androgen Receptor Myostatin Inhibitors (ARMI), YK11 has shown excellent results in various studies.

YK-11 is often combined with other SARMs for better results. For example, combining YK11 with RAD140 can result in accelerated muscle growth and increased fat loss. Alternatively, stacking YK-11 with LGD-4033 can provide a synergistic effect that vastly enhances the development of lean body mass. Speaking to a doctor before combining any SARMs for improved results is always advisable.