Ostarine (MK-2866): A Complete Guide to Its Benefits, Side Effects and Review

There is plenty of buzz about the new source of supplementation in the bodybuilding market today. It is about SARMs and many bodybuilders and athletes are raving about it.

Let us make one thing clear. SARMs are not anabolic steroids and they don’t mess up your body as steroids do.

While they can stimulate metabolism and have steroid-like properties, they are not classified as steroids. That means, there is an opportunity to bulk and tone up without taking chances on your health. But only if you use the right SARMs and in the right way.

Selective Androgen Receptors Modulators or abbreviated as SARMs are performance-enhancing compounds that can help increase muscle mass, elevate energy levels, build strength, and facilitate fast recovery.

You can find many SARMs in the market and there is one particular product that seems popular – Ostarine.

This SARM was originally developed to help patients who are suffering from cachexia or muscle-wasting syndrome. Its ability to quickly build muscle, boost testosterone levels, and remove excess fat makes Ostarine a popular choice.

In this article, we will give a detailed review of Ostarine MK-2866 along with its benefits, and side effects.

ostarine bodybuilding


What is Ostarine?

In bodybuilding, this product is a popular supplement. It is because many of the users of the product have seen significant changes in their bodies. They achieved a leaner physique from the development of muscles and the removal of excess fat.

Ostarine is a kind of SARM that targets androgen receptors to help grow muscles. This behavior is not exclusive to it as there are other chemicals that work this way. For example, steroids.

Selected steroids have the same effect on the body. The only difference is SARMs don’t have the side effects users experience from steroids.

Clinical studies on Ostarine MK-2866 have proven that it is effective when used in patients with debilitating muscle loss issues like muscular dystrophy.

The same results became the basis for including Ostarine MK-2866 as part of supplementation for athletes and bodybuilders. It can help increase muscle mass, achieve rapid fat loss, and increase strength and stamina during bulking and cutting phase.

The benefits of using Ostarine MK-2866:

  • Increase Muscle Mass – it can deliver a significant increase in muscle mass. These results are not surprising since SARMs copy anabolic steroids without the ugly side effects of acne, gynecomastia, and even testosterone suppression.
  • Reduce Body Fat – Ostarine MK-2866 binds with the body’s androgen receptors. As a result, it speeds up the body’s metabolic rate to remove excess fat while building muscles.
  • Increase in Bone Density – Aside from increasing the lean muscle and shedding of fats, Ostarine MK-2866 can also increase bone density and prevent bone fractures for those who are at risk like menopausal women, obese, and seniors.

How Does Ostarine Work?

All SARMs work in the same way. The only difference is in its strength. Ostarine MK-2866 is one of the safest, mildest, and most researched among them, but can still give great results.

This compound is designed to selectively target the androgen receptors in the body. With this specific action, it will not have unwanted side effects like an increase in the prostate or significant hair loss.

When it binds with these receptors, it dictates the muscle to grow. The process is not as straightforward as it seems as there are further enhancement of protein synthesis involved to facilitate this muscle growth.

It can also help to increase endurance levels for users to have longer workout sessions. It will benefit them when they want to build their form and shed some weight.

It is also worth noting that this SARM ensures that the muscle fibers are repaired and replenished after a workout quickly. This adds to achieving a leaner and well-cut body.

Thanks to the amino acids present on Ostarine MK-2866 like Leucine, it helps to speed up muscle recovery and reduce the lactic acid build-up during an intense exercise.

Who Should Use Ostarine?

The product works well with bodybuilders and athletes who are into strength, cutting, and bulking. It works by binding to the androgen receptors in the body.

This action is important because receptors are responsible for controlling some of our bodily functions. Including fat loss, muscle growth, and recuperation.

By Ostarine MK-2866’s binding action to the receptors, it can help those who want to lose their body fat and increase their lean muscle. Because it is safer than steroids but equally effective, it is an ideal choice for people who want to achieve their body goals.

It is also perfect for men who have low testosterone levels because it can help them gain extra muscles when they are trying to develop their bodies. As for those who have dry weight ratio targets, Ostarine MK-2866 is perfect because it prevents the user from having a bloated look.

ostarine build muscles

Is Ostarine Legal?

As already mentioned, this supplement is a kind of selective androgen receptor modulator (SARM) and is designed as a cure for people who are suffering from muscle wasting diseases or dystrophy.

Further studies and medical reviews suggested that the compound can be used to shed extra pounds while maintaining lean muscles and increasing stamina and endurance. This fueled an enthusiasm from the bodybuilding community to try it out as a supplement.

Since it is a SARM, it is not as harmful to the body as steroids when taken in moderation. However, this product has no approval from the FDA and therefore cannot be marketed as a food supplement.

It is not harmful to consume but it is also not 100% safe either as there are countless side effects too. Although it remains a better option than steroids, there is no surety that it is safe for human consumption.

Because it is not approved by the FDA, it is illegal to possess or consume them by any means.

Ostarine Side Effects

Ostarine MK-2866 is non-toxic. But it has a few side effects that are subjective, including the following:

Headache: Many users of this product have complained about experiencing headaches when they began taking the product. Lowering the dosage or taking an Aspirin before taking the supplement can alleviate this side effect.

Nausea: Other users complained of experiencing nausea when they began using Ostarine MK-2866. This is because of the reaction of the body when the estrogen levels were altered due to this SARM.

Depression: There are some unconfirmed reports of depression with prolonged use of Ostarine MK-2866. Although this is a temporary condition, a prolonged battle with depression while using a SARM can be alarming. It is strongly advised to discontinue using Ostarine MK-2866 in this situation.

Joint Pain: For those who are using this supplement to build muscles, it is natural to feel momentary joint pain as the body adjusts to the medication. For those who feel this discomfort, we suggest taking weeks off from the cycle until the pain subsides and goes away.

Other reported discomfort from using Ostarine MK-2866 is:

  • Decrease in HDL levels
  • Acceleration of hair loss
  • Increase hunger
  • Back acne

Ostarine Dosage

Many professional users of Ostarine MK-2866 vouch for it as highly effective even if it only requires a small dosage regularly. In general, 10mg a day is enough to get slow but steady results. This dosage will also mitigate any possible side effects.

For those whose aim is to cut off the excess weight, more dosage is needed, But for those who are bulking, they should take it in small doses only.

There is no scientific basis to suggest which dosage is the best. However, based on various experiences by its users, dosages between 10-30mg a day can make great improvements in muscle recovery, muscle mass, and strength.

Going over the suggested dosages just to hasten the results is not advisable as it could have adverse effects.

The Ostarine MK-2866 cycle pertains to the general cycle of the supplement. And it should be 8-10 weeks long. After that, you need post-cycle therapy to regulate the hormones after prolonged use of it.

Stacking with Ostarine MK-2866

Ostarine MK-2866 can work well with Cardarine GW501516 for even better results. These two SARMs can produce fat loss and lean muscle mass gains faster than any other combination.

Both promote fat loss. But it is Ostarine MK-2866 that ensures muscle retention during the cutting cycle.

Stacking Ostarine with other supplements can deliver improved results. Some supplements that to combine include:

  • Creatine – for improved muscle growth and recovery.
  • Whey protein – for a high-quality protein that can improve muscle development and recovery.
  • BCAA – for additional amino acids that promote muscle growth and recovery.

Ostarine MK-2866 Alternatives

There is an ongoing debate about the effectiveness of SARMs and their legality. First is, there is no clinical backing on the premise that these compounds target specific androgen receptors.

Second is it has no FDA approval to market this product as a supplement. With that being said, it definitely makes sense to know its alternatives.

FDA has warned users of Ostarine MK-2866 about various health concerns related to its use. SARMs are not dietary supplements and their regular consumption may lead to serious medical consequences.

Legal steroids like D-Bal, TestoMax, and Anvarol can be an alternative to it as they work just as well and without side effects. That is because these supplements have herbal and natural compositions.

D-Bal – it is a safe alternative to Dianabol.

Trenorol – is the best alternative to the steroid, Trenbolone, and SARMs.

Anadrole – it works in the same way as the illegal steroid Anadrol and SARMs.

OstaBulk – is the natural alternative to Ostarine MK-2866, a SARM developed to treat osteoporosis and muscle wasting.

Best Ostarine (MK-2866) Alternative

The latest trend among athletes and bodybuilders is to go for natural ingredients when looking for supplements. There are many pills available that mimic the action of steroids and SARMs but without side effects.

OstaBulk from Brutal Force is at the forefront of all these Ostarine (MK-2866) alternatives. According to its manufacturer, it is a direct alternative since it is made to replicate the good results from using Ostarine.

It is made from totally natural and safe ingredients and works on the body’s metabolism.

ostabulk ostarine alternative



When does Ostarine kick in?

Users of this product observe a gain of 5-7 pounds or even more in a 6-week cycle while bulking. However, anyone who is using it should stick to the 6-8 cycle but not more.

How To Cycle Ostarine?

Ostarine should be taken at 24-hour intervals. It simply means you can take it every day at any time. However, it is not advisable to take it during or right before a workout. The best time to take it is in the morning or after working out.

What To Stack With It?

For those who want a potent stack for cutting, you can combine Ostarine and Cardarine. It is highly effective in building and preserving muscle tissue.

During cutting, you tend to lower calories but Ostarine can help you build muscles even if you are eating less. Combining it with Cardarine, a PPAR agonist can hasten the fat-burning process by increasing stamina and endurance.

Is Ostarine A Steroid?

No. Ostarine MK-2866 is not a steroid. It belongs to the type of compound called SARM (selective androgen receptor modulator) that can help increase muscle mass and reduce body fat.

Does Ostarine Affect Sleep?

There are anecdotal accounts of Ostarine side effects, including sleeplessness and lethargy. To prevent sleep interruption, it is recommended to be taken in the morning or after a workout.

Can Ostarine Cause Acne?

In some cases, acne and hyperpigmentation can occur as a result of using it. These side effects are highly subjective and can vary from person to person.

Is Ostarine Good for Fat Loss?

Yes. Ostarine can be used for fat loss. Many bodybuilders take Ostarine (MK2866) not only to enhance muscle growth but also to accelerate fat loss, particularly during the decomposition period. It is a potent SARM for muscle growth and fat loss.

What is the safest SARM?

Ostarine is the safest SARMs as it is the most researched among its contemporaries it is exceptionally versatile, whether cutting or bulking and is extremely mild when used wisely.

Final Thoughts

Ostarine MK-2866 is the oldest and mildest SARMs available in the market. It is also very affordable and flexible as it can be used during cutting or bulking. Since it is the safest, beginners can use Ostarine to reap its benefits. It can help promote lean muscle gain, fat loss, and incredible strength.

This SARM is better than any other steroid used for muscle gain and has minimal side effects. However, it does not have FDA approval. There is a safer and legal supplement that has the same effect, OstaBulk. It can help you gain a significant amount of muscles in just 8 weeks.

Roger Kruger
Roger Kruger
Roger is an editor at Dietarious.com, he is passionate about dieting, bodybuilding, and weight loss supplements.


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