Ostarine MK-2866 SARMs: Side Effects, Dosage And Before And After Results

Ostarine MK-2866 is the secret weapon that bodybuilders and athletes swear by to transform their physique. One noteworthy player in Ostarine is MYO-STA, produced by Savage Line Labs in Canada, making its mark in bodybuilding circles.

Whether on a gruelling cutting cycle or bulking up, Ostarine MK-2866 has your back, helping protect lean muscle mass from slipping away. Ostarine attaches itself to androgen receptors in the body, sending a clear message to your muscles: “Grow!”

In this blog post, we’ll dive deep into the benefits of MK-2866, exploring how it can promote muscle growth, boost strength and stamina, target stubborn body fat, dosage, cycle, stakes and before-and-after results. We’ll also lighten its potential for enhancing bone density and uncover the side effects you should know.

What is Ostarine MK-2866?

Ostarine MK2866 is a SARM that has gained popularity among bodybuilders and athletes seeking to enhance muscle mass, strength, and overall performance. This SARM has garnered attention for potential medical applications, particularly in combating muscle wasting conditions like osteoporosis and sarcopenia.

With its dual role in athletic enhancement and potential therapeutic benefits, MK-2866 continues to captivate the interest of fitness enthusiasts and medical researchers alike.

Initially developed by a collaborative effort involving researchers from Ohio State University, the University of Tennessee, and GTx Incorporated, Ostarine gained momentum in clinical trials throughout the 2000s.

A groundbreaking Phase II trial in 2011 demonstrated significant improvements in lean body mass and physical function, all without the adverse effects typically associated with traditional steroids.

While MK-2866 showed promise in various trials, it faced setbacks in its quest for approval, particularly in treating wasting associated with lung cancer. Despite these challenges, it has remained under investigation for potential therapeutic uses, including stress urinary incontinence in women.

The CFIA has recognized the potential of Ostarine, granting it fast-track designation for metastatic breast cancer treatment in specific cases. Ostarine has a chemical formula of C19H14F3N3O3 and a unique structure.

It build muscle mass, improvs strength, fat loss, and enhanced bone mineral density However, it’s essential to be aware of potential side effects, including acne, hair loss, mood swings, and reduced libido.

How Does Ostarine Work?

Ostarine MK2866 works by binding to androgen receptors in your body, signalling the cells to start making fantastic muscle fibres. It helps in increasing muscle mass and endurance. This remarkable compound, often called a SARM, selectively targets androgen receptors in muscle and bone tissues. By doing so, MK-2866 kickstarts a process that leads to enhanced muscle protein synthesis, increased muscle mass, and improved muscle endurance.

Ostarine Use Cases

Ostarine Use Cases

Ostarine is used for various conditions, including athletic performance, involuntary weight loss due to illness, and breast cancer. However, there is no good scientific evidence to support these uses.

Viking Therapeutics is currently conducting research on Ostarine as a potential treatment for muscle-wasting conditions in cancer patients. Interestingly, many bodybuilders have also turned to Ostarine to increase muscle mass, reducing body fat, and boost strength during both bulking and cutting phases of their training cycles.

MYO-STA is an orally administered compound that is thought to offer advantages in terms of body fat reduction, muscle development, and muscle recovery. Individuals have shared experiences of substantial fat loss while concurrently increasing lean muscle mass, all without encountering muscle atrophy.

According to Charles Paul Lambert’s article titled “Should the FDA Reconsider Criteria for Cachexia Drug Efficacy? Assessing the Safety and Effectiveness of Ostarine,” MK 2866 is regarded as beneficial for reducing body fat levels and improve muscle strength simultaneously.

MK-2866 Cycle & Dosage

The typical MK-2866 cycle and dosage approach involves a daily intake of twenty (20) mg over eight weeks for those at an advanced level. On the other hand, beginners often opt for a slightly milder strategy, with a daily dosage of ten (10) mg throughout the cycle.

Ostarine Cycle for Women

The typical MYO-STA Cycle for women is 10 mg daily for 8 weeks. Longer cycles may increase the risk of side effects and require post-cycle therapy (PCT) to restore natural hormone levels.

Five Benefits of Ostarine

Five Benefits of Ostarine

There are 5 incredible Ostarine benefits for bodybuilders:

1. Huge, Hard & Fast Muscle Growth

Ostarine targets androgen receptors in muscle tissue, stimulating protein synthesis and muscle development. Impressive, rock-hard muscles that can help you achieve that chiselled physique you’ve always dreamed of.

2. Increased Bone Density

MYO-STA not only builds muscle but also improves bone density. It added bone strength is essential to withstand the rigorous demands of intense workouts and reduce the risk of injuries that can hinder progress.

3. Stimulation of Cognitive Function

Mental focus is a critical component of practical training. MK-2866 offers a unique advantage by enhancing cognitive function. It can sharpen your mental clarity, helping you stay focused on your workouts and maintain the discipline needed for a successful bodybuilding journey.

4. Increased Energy Reserves

MYO-STA helps by boosting your energy reserves, allowing you to push through intense workouts with greater endurance.

5. Enhanced Libido

Maintaining a healthy libido is often overlooked but essential for overall well-being. MYO-STA can help by increasing libido and sexual performance. It can boost your confidence inside and outside the gym, contributing to a more balanced and fulfilling lifestyle.

MYO STA Before & After Results

MYO STA Before & After Results

43% of users report being thrilled with the results of their MK 2866 cycles, achieving learner, more extensive frames. Some even swear by the brilliant combination of 20 mg of MYO-STA and 10 mg of Cardarine. They are adding vitamins to the mix to amp up their effectiveness. 

Users have marvelled at Ostarine’s ability to turn their bodies into “fat-blasting furnaces” without requiring strict calorie-restricted diets. It also stands out for its remarkable capacity to prevent muscle loss, making it a safer alternative to anabolic steroids. MYO-STA is a game-changer without androgenic side effects like acne and hair loss.

Learn about how to use SARMS for bulking and cutting here: SARMS stack for bulking and cutting

Does Ostarine Affect Testosterone Production?

MK-2866 does not affect testosterone levels if you take it in the correct dose. This SARM is known for its ability to target specific androgen receptors in the body without causing widespread hormonal disruptions. When used responsibly and within recommended dosage ranges, MYO-STA generally maintains testosterone production at its natural levels. 

It distinguishes it from anabolic steroids, which can significantly suppress the body’s testosterone production. However, taking it for more than 8 weeks can decrease natural testosterone production by up to 50%.

Five Common Side Effects of MK-2866

Five Common Side Effects of MK-2866

Five common side effects that bodybuilders may experience when using Ostarine are given below: 

1. Acne

It occurs because MK-2866 can stimulate sebaceous gland activity, increasing oil production on the skin. This excess oil can clog pores and result in acne outbreaks, particularly in individuals prone to acne.

2. Hair Loss

MK-2866, like other SARMs, affects testosterone levels. An imbalance in testosterone can trigger hair follicles to shrink, leading to hair thinning or baldness.

3. Liver Injury

According to “Drug-Induced Liver Injury From Enobosarm (Ostarine), a Selective Androgen Receptor Modulator by H Bedi” An overload caused by Ostarine can lead to liver injury, characterized by symptoms like jaundice, dark urine, or abdominal pain. Liver injury occurs because the liver has to work harder to process the compound, potentially causing damage over time.

4. Headaches

According to “Peroxisome Proliferator-Activated Receptor Delta Agonist (PPAR- δ) and Selective Androgen Receptor Modulator (SARM) Abuse: Clinical, Analytical and Biological Data in a Case Involving a Poisonous Combination of GW1516 (Cardarine) and MK2866 (Ostarine) by P Kintz” Hormonal fluctuations affect blood vessels and trigger headaches. Dehydration, which can accompany Ostarine use, might exacerbate this side effect.

5. Venous Thromboembolism

According to “Ostarine and Ligandrol Improve Muscle Tissue in an Ovariectomized Rat Model by PJ Roch” Venous Thromboembolism encompasses blood clots that form in the veins, potentially blocking blood flow and causing severe health issues. It’s thought to be related to changes in blood viscosity or clotting factors due to hormonal fluctuations.

Learn about the side effects of SARMs here: Comprehensive guide on SARMs side effects

Who is Ostarine suitable for?

Who is Ostarine suitable for?

Ostarine suits all bodybuilders and athletes looking to improve their muscle mass, strength, and overall performance. This powerful compound has gained popularity for its ability to help individuals push their physical limits and achieve their fitness goals. 

Whether you’re a seasoned bodybuilder aiming to break through plateaus or an athlete looking to enhance your endurance, Ostarine is a valuable addition to your regimen.


MK-2866 is illegal in Canada for human use when intended for performance gains. This prohibition is rooted in severe health concerns, including the risk of heart problems and liver damage associated with its usage. MK-2866 boasts anabolic and muscle-building effects that may seem enticing to athletes and bodybuilders. However, the potential dangers far outweigh any perceived benefits.

Can you use MK 2866 as a dietary supplement for improving athletic performance?

MK 2866, an investigational drug, is currently under scrutiny in ongoing clinical trials. It shows promise as a potential treatment for muscle wasting diseases like osteoporosis, cancer, and hypogonadism. However, it is essential to note that Ostarine is not yet approved by world anti doping agency or healthcare professionals for human consumption.

While some athletes have turned to Ostarine and other anabolic steroids in pursuit of enhanced athletic performance, its status as a banned substance raises concerns. As clinical trials continue to explore its efficacy and safety, it is crucial for individuals to consult with a healthcare professional before considering Ostarine or any similar substances for therapeutic purposes. And avoid MK 2866 for muscle building or enhancing athletic performance if you have to do regular drug test.

Does MK-2866 Need a PCT?

MK-2866 does not typically require Post Cycle Therapy (PCT). Unlike traditional anabolic steroids, MK-2866 is a selective androgen receptor modulator with a more targeted effect on muscle growth and recovery. While some individuals may experience mild testosterone suppression with MK-2866, it is generally insignificant. This level of suppression typically does not warrant a full PCT.

Read more: PCT guide for SARMs

Where to Buy MK-2866 in Canada?

You can buy MK-2866 online in Canada. You may find MK-2866 available on reputable fitness websites and some online stores. Thorough research is essential to safeguard your safety and investment. For a dependable choice in Canada, consider Our platform offers a reliable option backed by rigorous quality guarantees and testing protocols to ensure you get the best product possible.

When are the first results of Ostarine visible?

The first results of MYO-STA become visible within 4 weeks. Ostarine has a unique ability to target specific muscle fibres. This precision amplifies your growth potential, resulting in a rapid increase in visibility. You will experience an initial boost in muscle mass and endurance, making your workouts more effective.

MK 677 vs MK-2866

Both compounds belong to the family of Selective Androgen Receptor Modulators and offer unique benefits. MK-2866 stands out for its impressive muscle-building prowess and body recomposition capabilities. It’s renowned for promoting lean muscle gains without the water retention often associated with MK-677. MK-677 boosts growth hormone secretion and appetite, perfect for ramping up hunger or aiding recovery. Choosing between them depends on your specific fitness goals.

Related: LGD 4033 VS RAD 140

Final Thoughts

Ostarine MK-2866 is a powerful ally in pursuing muscle gain and fitness goals. With its ability to boost nitrogen retention, promote protein synthesis, and enhance bone density, it’s a standout choice for those seeking impressive before and after results. What truly sets MYO-STA apart is its low risk of side effects, making it a safer option than traditional steroids. 

Its benefits extend beyond muscle growth, as it aids in weight loss, bolsters metabolism, and provides a sustained surge of energy. For bodybuilders and athletes, Ostarine MK-2866 emerges as a natural and highly effective formula, unlocking the path to a more robust, fitter you.


  • Natalia Leciejewska, Paweł A. Kołodziejski, Maciej Sassek, Leszek Nogowski, Emilian Małek, Ewa Pruszyńska-Oszmałek (April 15, 2022) Ostarine-Induced Myogenic Differentiation in C2C12, L6, and Rat Muscles
  • Fred A. M. G. van Geenen, Maurice C. R. Franssen, Ville Miikkulainen, Mikko Ritala, Han Zuilhof, Risto Kostiainen, Michel W. F. Nielen (January 7, 2019) TiO2 Photocatalyzed Oxidation of Drugs Studied by Laser Ablation Electrospray Ionization Mass Spectrometry
  • Pingxuan Shao, Yan Zhou, Dehua Yang, Ming-Wei Wang, Wei Lu, and Jiyu Jin (December 24, 2019) Synthesis of Aryl Propionamide Scaffold Containing a Pentafluorosulfanyl Moiety as SARMs
  • Charles Paul Lambert (March 23, 2021) Should the FDA’s criteria for the clinical efficacy of cachexia drugs be changed? Is Ostarine safe and effective?
  • Ryan M. Van Wagoner, Amy Eichner, Shalender Bhasin, Patricia A. Deuster, Daniel Eichner (November 28, 2017) Chemical Composition and Labeling of Substances Marketed as SARMs and Sold via the Internet
  • Marina Komrakova, Janek Nagel, Daniel Bernd Hoffmann, Wolfgang Lehmann, Arndt Friedrich Schilling, and Stephan Sehmisch (September 2, 2020) Effect of Selective Androgen Receptor Modulator Enobosarm on Bone Healing in a Rat Model for Aged Male Osteoporosis
  • K. O. Böker, M. Komrakova, L. Fahrendorff, B. R. Spelsberg, D. B. Hoffmann, A. F. Schilling, W. Lehmann, S. Taudien, S. Sehmisch (June 28, 2023) Treatment of osteoporosis using a selective androgen receptor modulator ostarine in an orchiectomized rat model
  • Ioannis Simitsidellis, Arantza Esnal-Zuffiaure, Olympia Kelepouri, Elisabeth O’Flaherty, Douglas A Gibson, Philippa T K Saunders1 (July 18, 2019) (SARMs) have specific impacts on the mouse uterus
  • Ostarine(MK-2866) | C19H14F3N3O3 | CID 45107712
  • Formula of Ostarine(MK-2866) (C19H14F3N3O3)

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