YK-11 SARMs Review: Side Effects, Dosage And Before And After Results

YK-11 has gained immense popularity in Canada and worldwide for its incredible potential to help individuals achieve their fitness goals. MYO-YK is the brand name of this SARMs, produced by Savage Line Labs. It helps you gain an astonishing 15-20 pounds of muscle in a month or two. While it can be helpful, it can also be dangerous if you are not careful with the cycle and dose.

Excessive use of YK-11, like its cousin follistatin, may increase the risk of certain cancers, such as skin, esophageal, stomach, and prostate cancer. Additionally, large doses of this SARMs could harm your liver, as it shares some characteristics with anabolic steroids. You’ll need to commit to a 6-week regimen to achieve visible results.

This blog will explore YK-11 SARMs, delving into side effects dosage recommendations and showcasing documented before and after transformations for a comprehensive understanding.

What is YK-11 (MYO-YK)?

What is YK-11 (MYO-YK)?

YK-11, captivates fitness enthusiasts with its muscle-boosting potential, making waves in bodybuilding circles for enhanced growth and retention. It functions as a myostatin inhibitor, a human growth factor that regulates rapid muscle growth.

However, excessively high levels of myostatin can lead to muscle mass loss. YK-11, transforms its chemical structure, diverging from Dihydrotestosterone (DHT). This unique alteration sets it apart from the rest of the SARMs, unveiling distinctive mechanisms and potential side effects.

In in-vivo studies, YK-11 has shown selective effects on androgen receptors, making it popular among those looking to achieve more muscle mass and increased strength. Athletes have also found it useful for reducing recovery times after injuries.

The chemical structure of YK-11 is (17α,20E)-17,20-[(1-Methoxyethylidene)bis(oxy)]-3-oxo-19-norpregna-4,20-diene-21-carboxylic acid methyl ester, and it functions as a partial agonist of the androgen receptor.

The benefits of MYO-YK include rapid lean muscle mass gain, increased strength, and elevated energ\y levels. It also enhances your performance, recover faster, and enjoy increased human growth hormone (HGH) levels as well.

However, it’s essential to be aware of potential side effects, including increased hair growth, acne, changes in libido, insomnia, anxiety, irritability, nausea, and headaches.

How Does YK-11 Work?

YK-11 works wonders for bodybuilding by uniquely promoting dense muscle mass and strength. Unlike traditional steroids, MYO-YK targets explicitly the androgen receptors in your muscle tissue.

This selective action helps muscle fibres to build muscle without the unwanted side effects often associated with steroids. This SARM also increases your production of follistatin, a protein that inhibits myostatin – one of the crucial growth factors for skeletal muscles.

YK-11 Use Cases

YK-11 Use Cases

YK-11 is a potent muscle builder while safeguarding your hard-earned gains during cutting phases, possibly adding to your muscle mass. Expect accelerated growth in skeletal muscle mass and bone cells, more productive workouts, increased strength, reduced body fat, prevention of muscle loss, enhanced endurance, and faster recovery times. With MYO-YK, your fitness journey just got a powerful boost. 

YK-11, a synthetic steroidal compound, holds promise in medical applications. It has shown potential to increase growth of muscle cells and strength, especially in patients with muscle-wasting conditions such as muscular dystrophy and sarcopenia. 

YK-11 Cycle & Dosage

For Beginners, MYO – YK recommended dosage is 5mg daily for a 6-week cycle. It allows them to gauge their body’s response and minimize potential side effects. On the other hand, advanced bodybuilders with prior experience can consider a dosage of 20mg per day, extending their cycle to 8 weeks for optimal gains.

Learn about SARMS cycle here: Maximizing Your Results with SARMs Cycle

YK-11 Stacks

YK-11 stacks are all the rage among fitness enthusiasts looking to take their muscle-building journey to the next level. It’s a versatile compound that pairs exceptionally well with other SARMs like Andarine, LGD-4033, or RAD140.

By adding MYO-YK to your stack, you’ll experience a remarkable muscle size and strength surge. This potent combination promises more muscle mass gains and significantly improves overall athletic performance with fewer side effects than most anabolic steroids.

YK-11 Cycle for Women

YK-11 Cycle for Women

The recommended dosage for women falls in the range of 5mg per day. Start at the lower end and gradually increase if needed. But always under the guidance of a healthcare professional or experienced fitness trainer. The cycle duration usually spans six weeks, with careful monitoring of any potential side effects. 

Five Benefits of YK-11

Five Benefits of YK-11

There are listed five benefits of YK-11 for bodybuilding:

1. Enhanced Muscle Growth

MYO-YK increases the levels of follistatin, a protein that inhibits myostatin, a growth-limiting factor. By blocking myostatin’s effects, YK-11 allows for uninterrupted muscle development, resulting in more substantial gains.

2. Improved Strength and Power

MYO-YK can significantly enhance these attributes by increasing muscle size and promoting greater muscle contraction. It leads to improved performance during workouts and better results in the gym.

3. Faster Recovery

YK-11 has been linked to quicker recovery times, allowing bodybuilders to train more frequently and with higher intensity. Reduced post-workout soreness is a welcome bonus.

4. Improved Metabolism

YK11 is one of the best dietary supplements that is popular in the bodybuilding community due to its ability to improve metabolism, promote fat loss, and especially body recomposition.

According to a study by Mustafa Munir Mustafa Dahleh and his team, YK11 can help users lose fat while building muscle, resulting in a leaner and more toned physique. The study, published in Pubmed, found that YK11 works by increasing the body’s metabolic rate and blocking the production of myostatin, a protein that inhibits muscle growth.

YK11 is especially popular among bodybuilders who are preparing for competitions, as it can help to improve body composition and reduce water retention.

5. Improved Bone Density

A number of studies have shown that YK11 can improve bone health in both animals and humans. YK11 SARM improves bone health by increasing levels of activated protein kinase B, which stimulates bone cell growth and inhibits bone cell breakdown. YK11 also increases collagen production and reduces bone inflammation.

YK-11 Before & After Results

YK-11 Before & After Results

The results with MYO-YK can vary significantly from person to person, depending on their workout routines and dietary choices. Those who target their muscles effectively during workouts tend to see rapid improvements. In the initial stages, users often enjoy a substantial surge in strength, enhanced muscle growth, and noticeable changes in their body composition.

To make the most of YK-11 with some side effects, many users have succeeded by starting with a modest 5 mg dose for a 6-week cycle. This approach has effectively reduced common side effects like nausea, depression, and mood swings. A 6-week MYO-YK cycle can lead to gains of up to 30 lbs in both muscle and fat.

Does YK-11 Affect Testosterone Production?

Yes, YK-11 does affect testosterone production. Unlike traditional anabolic steroids, YK-11 is a SARMs, which specifically targets androgen receptors in muscle and bone tissue. While it can promote muscle growth and strength, it doesn’t directly impact testosterone production like steroids do. Instead, YK-11 may suppress natural testosterone levels, which could lead to hormonal imbalances if used improperly.

Five Side Effects of YK-11

Five Side Effects of YK-11

Here, we discussed five common side effects of YK-11:

1. Hormonal Imbalance

YK-11 interacts with androgen receptors, which can lead to hormonal imbalances. It can affect the normal functioning of the endocrine system and result in unwanted side effects, including mood swings, fatigue, and libido changes.

2. Breast Cancer

This SARM can activate certain receptors in breast tissue, potentially promoting the growth of cancerous cells. According to research by Yuichiro Kanno, while more research is needed, this is a serious concern for users, especially if they have a family history of breast cancer.

3. Testosterone Suppression

YK-11 can interfere with the body’s ability to produce testosterone, the primary male sex hormone. According to “Selective Androgen Receptor Modulator, YK11, Regulates Myogenic Differentiation of C2C12 Myoblasts by Follistatin Expression by Yoshio Inouye” It can lead to a decrease in muscle-building capabilities and energy levels and even affect mood and libido.

4. Heart Attack

This SARM can affect lipid profiles, leading to an increase in LDL cholesterol (the “bad” cholesterol) and a decrease in HDL cholesterol (the “good” cholesterol). According to “Unauthorized products may pose serious health risks by James M. Hotaling” Elevated LDL and low HDL increase heart disease risk, especially in people with prior heart issues, increasing susceptibility to heart attacks.

5. Hair Loss

This compound primarily interacts with androgen receptors in the scalp. According to “Selective Androgen Receptor Modulator, YK11, Up-Regulates Osteoblastic Proliferation and Differentiation in MC3T3-E1 Cells by Tomofumi Yatsu” This interaction can accelerate hair thinning or baldness in genetically predisposed individuals.

Related: 3 Safest SARMs for Bodybuilding in Canada

Does YK-11 Need a Post Cycle Therapy?

Yes, MYO-YK does require a post cycle therapy. While it may induce only mild testosterone suppression, it’s wise to err on caution. To safeguard your hormonal balance, consider incorporating a PCT regimen with substances like Nolvadex or Clomid. To maximize the benefits of MYO-YK, some users also recommend stacking it with compounds such as RAD140, LGD-4033, or Andarine.

Who is YK-11 Suitable for?

Who is YK-11 Suitable for?

MYO-YK is the go-to choice for those aiming to sculpt their physique precisely. This remarkable ingredient excels in cutting, lean bulking, and body recomposition. It’s a potent myostatin inhibitor, safeguarding your hard-earned muscle mass during cuts and potentially adding more. YK-11 indirectly tames Myostatin by upping Follistatin expression, unleashing those coveted anabolic effects. YK-11 is a great fit for vegans, too.


YK-11 is illegal in Canada. Buying YK11 SARM for personal use is illegal and could result in legal trouble.

Read more: Legal status of SARMS supplements in Canada

Where to Buy YK-11 in Canada?

You can buy MYO-YK online in Canada. When purchasing SARMs, choosing trusted sellers that provide testing and quality guarantees is crucial. Reputable fitness websites and select online stores may offer YK-11. For a dependable and safe option, consider checking out We provide a reliable source with quality assurance and rigorous testing to ensure your peace of mind when purchasing MYO-YK in Canada.

When Are the First Results of Yk-11 Visible?

The first results of MYO-YK become visible after consistent use for about 4 to 6 weeks. Patience is key when incorporating this compound into your fitness routine. You can anticipate subtle yet noticeable muscle tone and strength changes during this time. YK-11 helps unleash your body’s muscle-building potential, but it takes time for the effects to become truly apparent.

What is the Half-Life of Yk-11 SARMs?

The half-life of YK-11 SARMs is approximately 24 hours. This relatively long half-life offers a significant advantage, as you only need to take one daily dose to experience its benefits fully. This convenience makes YK-11 an excellent choice for individuals looking to enhance their fitness routines without the hassle of frequent dosing. With MYO-YK, you can maximize your fitness gains while keeping your regimen simple and effective.

Can I Take Yk-11 Together With Other Anabolic Steroids?

Yes, you can take YK-11 alongside other anabolic steroids. MYO-YK works wonders by boosting muscle retention and growth while SARMs lock onto your androgen receptors. This dynamic combo creates an incredible anabolic impact, guaranteeing you astonishing outcomes.

Final Thoughts on YK11 Myostine review

YK-11 SARMs, often seen as a shortcut to achieving a chiselled physique, have gained popularity among those seeking rapid muscle gains. While the promise of stunning transformations is alluring, reckless use of these substances can lead to serious long-term health risks. Approach with caution and prioritize your well-being.

These potential side effects of SARMs, from hormonal imbalances to heart attacks, should not be taken lightly. To maximize the potential benefits of MYO-YK and ensure your health is protected, stick to the recommended dosage. Moreover, please consult a healthcare professional before adding it to your fitness routine.


  • Caitlin Harding, Marjaana Viljanto, Jocelyn Habershon-Butcher, Polly Taylor, James Scarth (Jan 4, 2023) Equine metabolism of the selective androgen receptor modulator YK-11 in urine and plasma following oral administration
  • Mario Thevi, Thomas Piper, Josef Dib, Andreas Lagojda, Dirk Kühne, Lars Packschies, Hans Geyer, Wilhelm Schänzer (July 30, 2017) Mass spectrometric characterization of the selective androgen receptor modulator (SARM) YK-11 for doping control purposes
  • Yuichiro Kanno, Ritsuko Hikosaka, Shu-Yun Zhang, Yoshimi Inoue, Takayuki Nakahama, Keisuke Kato, Akemi Yamaguchi, Nobuaki Tominaga, Shinya Kohra, Koji Arizono, Yoshio Inouye (March 23, 2011) (17α,20E)-17,20-[(1-methoxyethylidene)bis(oxy)]-3-oxo-19-norpregna-4,20-diene-21-carboxylic acid methyl ester (YK11) is a partial agonist of the androgen receptor
  • Tomofumi Yatsu, Taichi Kusakabe, Keisuke Kato, Yoshio Inouye, Kiyomitsu Nemoto, Yuichiro Kanno (August 12, 2021) Selective Androgen Receptor Modulator, YK11, Up-Regulates Osteoblastic Proliferation and Differentiation in MC3T3-E1 Cells
  • Andrew R. Christiansen, Larry I. Lipshultz,James M. Hotaling, and Alexander W. Pastuszak (March 9, 2020) Selective androgen receptor modulators: the future of androgen therapy?
  • Jonathan D. Vignali,Kevin C. Pak,Holly R. Beverley,Jesse P. DeLuca, John W. Downs,Adrian T. Kress, Brett W. Sadowski, and Daniel J. Selig (May 10, 2023) Systematic Review of Safety of Selective Androgen Receptor Modulators in Healthy Adults: Implications for Recreational Users
  • Alexandru Turza, Gheorghe Borodi, Maria Miclaus, Marieta Muresan-Pop  (February 5,  2023) Exploring the polymorphism of selective androgen receptor modulator YK11

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