Ostarine MK 2866 SARM

Looking for more information on Ostarine MK 2866?

It is a SARM that has gained widespread popularity within the bodybuilding community as a safe and effective alternative to steroids since it can help you gain lean muscle mass without any major side effects that steroids are infamous for.

Ostarine MK 2866

In this article, you are going to find out extensive information on Ostarine MK 2866 and also what makes it a preferred choice of many bodybuilders around the world. We will also have a look at the potential side effects of this SARM along with legal and safe alternatives that are gaining momentum with each passing day.

What is Ostarine MK 2866?

SARMs stands for Selective Androgen Receptor Modulator and Ostarine MK 2866 is an orally active SARM manufactured by the company GTx, Inc. It happens to be one of the best and most effective SARM for bodybuilding.

Most bodybuilders try it as beginners and it helps them bulk up with lean muscle mass.

It is interesting to note that in a 12-week clinical study 120 healthy men and postmenopausal women were given Ostarine and the results showed that they gained a significant amount of muscle mass and also showed improved physical function as well as insulin sensitivity.

Best Legal Ostarine

Even though SARMs are known to have fewer side effects as compared to steroids, they are still illegal for use in bodybuilding and even professional sport. Moreover, they have not been approved by the FDA. Having said that, buying and selling them for research purposes is still legal.

Ostarine MK 2866 can also have side effects and this is why it is better to opt for a legal and safe alternative that can help you gain muscle mass and strength without any side effects or even PCT!

This is what OSTABULK from Brutal Force is all about. It is a 100% legal and all-natural alternative that mimics all the benefits of Ostraine 2866 while doing away with all the negatives.



Ostarine MK 2866




Huge Muscle Gains

  • Triggers Natural Testosterone Production
  • Increases Energy and Stamina
  • Sheds Unwanted Body Fat
  • Increases Muscle to Fat Ratio
  • No Side Effects
  • Buy 2 Get 1 FREE
  • Stacks well with other legal SARMs
Ostabulk mimics Ostarine MK 2866. It not only helps your body produce more testosterone but also helps you gain massive muscles while cutting down excess body fat. It also helps increase strength and energy levels tremendously.

NO Side Effects, NO PCT, Excellent User Reviews!


How Does Ostarine Work?

When consumed orally, Ostatine MK 2866 attaches itself to selective androgen receptors in your body. When it attaches itself to androgen protein it sends a signal for it to get bigger and this is how you end up gaining muscle mass.

One of the major differences between SARMs and steroids is that SARMs are taken orally while steroids are generally injected into the body. This cuts down the chances of getting an infection. Another important difference is that SARMs get attached to only selective androgen receptors whereas steroids react all over the body. This again reduces the severity of side effects.

Here, it’s important to more that, unlike anabolic steroids, Ostarine does not convert to estrogen or DHT.

Benefits of Ostarine

As mentioned above, SARMs bind themselves to selective proteins in your body and this is exactly how Ostarine works. What it means is that it does not enter parts or organs of the body where they can cause serious problems. In other words, there’s no interaction with your liver or pancreas. In addition to this, it does not really cause any androgenic or sexual problems.

Ostarine works only on your muscles and helps build them in size and strength.

Ostarine has grown immensely in popularity since it helps add significant muscle mass and also helps shed fat. This leaves you with lean and high-quality muscle mass.

No wonder, Ostarine is a highly preferred SARM when it comes to body recomposition. Most users prefer using it for an 8-week cycle at a dosage of 25 mg per day. This kind of cycle is known to help gain 6 to 9 pounds of lean muscle mass.

How about cutting?

Interestingly, Ostarine can be used for a cutting cycle too. In such a case, you will have to reduce the daily dosage to 15-20 mg per day and also cut down on your caloric intake.

Is Ostarine Legal?

Yes and NO!

Here are some important facts as far as the legality of SARMs, including Ostarine, is concerned.

  • Ostarine is legal only for research purposes.
  • Ostarine has not been approved by the FDA for human consumption.
  • It is illegal to use it as a bodybuilding supplement. Even supplements that consist of Ostarine as an ingredient are illegal to buy and sell.
  • Ostarine is a prohibited substance as per WADA or the World Anti-Doping Agency. Any professional athlete who tests positive for it is liable to face action by the authorities.

Who Should Use Ostarine?

Those who train hard – Ostarine can be a massive shit in the arm for those that put in time and effort in the gym. Intense, hard training coupled with a good diet is important to get results with Ostarine.

The very basic of building muscle lies in the fact that no supplement can help you build muscle until and unless you exercise hard and eat properly.

So, Ostarine is apt for those that want to bulk up and improve their results from their workouts.

It is also a great option for those who want to cut fat. In such a case, they need to exercise equally hard but cut down on their caloric consumption.

Ostarine Cycle

You can go for an Ostarine Cycle for:

  • bulking and
  • cutting

This is a SARM that is quite versatile and it can be used for both jacking up as well as for cutting down excess fat from your body so that you can get ripped and shredded muscles.

Typically, you can start with an 8-week Ostarine MK 2866 cycle with a daily dose of 25 mg.

If you have good tolerance for this SARM, then you can go for subsequent cycles extending up to 10-12 weeks.

Ostarine MK 2866

Ostarine Dosage

The dosage that you take depends upon whether you want to have it for bulking or cutting. Here are some more details:

  • Bulking Cycle – For bulking, it is recommended that you consume 25-30 mg per day for 8-weeks in the first cycle.
  • Cutting Cycle – For the purpose of cutting, it is recommended that you limit the dosage to 15-20 mg per day coupled with the caloric deficit so that your body sheds fat.

Ostarine for Bodybuilding

As far as bodybuilding is concerned, Ostarine can be used for both bulking and cutting.

When it comes to gaining muscle mass, it is suggested that you initially start off with an 8-week cycle of 25 mg per day.

As your body gets used to it and you find out your tolerance level, you can actually extend subsequent cycles for up to 12 weeks and you can also increase the dosage from 25 mg to 30 mg per day.

Moreover, testosterone suppression that you experience also varies from one individual to another. It is quite possible that not all individuals require a PCT after an Ostarine cycle. What it means is that you will have to monitor your own results in order to find out if you need PCT or not.

To be on the safer side, however, it is suggested that you go on a 3 week PCT with Clomid to mitigate any negative side effects of this SARM. Furthermore, a 10 mg dose of Clomid is suggested during this post-cycle therapy.

Ostarine for Cutting

Ostraine happens to be a highly versatile SARM and it can be used as both bulking and cutting SARM. The only difference is that you need to vary the dosage as well as your diet.

When trying to cut down body fat, you can start with a dose of 10 mg per day on your first 8-week cycle. Since the objective is to shed body fat it is important that your body is in a caloric deficit during the cutting cycle. Thus, you need to consume less food over this period.

Ostarine for Women

Ostarine is a SARM that is generally considered quite mild. In spite of that women are advised to use a lower dosage as compared to men.

When it comes to gain mass, it is recommended that women begin with a daily dose of 15 mg for an 8-week cycle. As far

As far as the cutting cycle is concerned, you should limit the dosage to 10 mg per day for a period of 8 weeks.

Ostarine Stacks

Ostarine can be stacked with other SARMs for both bulking and cutting cycles. The objective for such stacks, as is anybody’s guess, is to ensure faster and better results.

Ostarine Stack for Bulking

Here’s a typical Ostarine Stack that you can use for gaining muscle mass:

  • Ostarine MK 2866 – 25 mg per day
  • Andarine S4 – 25 mg every morning and evening
  • GW 50156 – 20 mg a day, 30 minutes before workout.

Ostarine Stack for Cutting

This is a stack that you can use for a cutting cycle:

  • Ostarine – 20 mg per day (preferably in the morning)
  • Andarine S4 – 50 mg per day (preferably in the evening)
  • Cardarine – 30 mg per day (preferably in the morning)
  • SR9009 – 20 mg per day (preferably in the morning)

I would like to mention here that one of the best Testolone Stacks is that of RAD 140 and Ostarine MK 2866. In such a case, the recommended daily dosage includes 10 mg of MK 2866 and 5mg of RAD 140. This cycle should not last more than 8 weeks and it could help you lose up to 10 pounds.

It’s important to note that this is an advanced cutting cycle for established or pro bodybuilders.

Legal Ostarine Stack

Even though SARMs are comparatively safer, they can still have side effects. Besides this, the use of SARMs is not approved by the FDA. It is illegal to use them for bodybuilding or professional sport.

Brutal Force has a range of legal SARMs that mimic actual SARMs without side effects. They have been getting a huge response from bodybuilders and are in great demand right now.

Here’s a perfect stack combining legal Ostarine with legal Andarine and Testlone to help you gain lean and high-quality muscle mass:

Ostarine Stack

SELECT STACK From Brutal Force


Select Stack


Legal Ostarine Stack

  • Consists of Ostrabulk, RadBulk, and Andralean
  • Ostabulk mimics Ostarine, Radbulk mimics Testolone or RAD140, Andalean mimics Andarine
  • Helps gain muscle mass quickly
  • Burns fat
  • Ensures lean muscle gains
  • Rapid recovery
  • Increases Vascularity
  • No Side Effects, NO PCT
  • Amazing User Reviews
  • 100 Days Money-Back Guarantee
SELECT Stack is the most popular SARMs stack from Brutal Force and it is recommended that you try it for at least 8 weeks to get the best results.

It can help you gain solid muscle mass and shred fat to get ripped muscles. It also comes with a Buy 2 Get 1 FREE Offer and an industry unmatched 100 days money-back guarantee.

Ostarine Side Effects

Here, I would like to mention the fact that SARMs still need a lot of clinical studies and research to establish their side effects. Whatever evidence exists about their side effects is anecdotal.

Users report side effects such as nausea, heartburn, diarrhea, stomach pain, testicle pain, joint pain, reduced overall wellness, gynecomastia, etc.

You can find out more about the side effects of Ostarine and other SARMs by clicking here.

Ostarine PCT

As mentioned above, it is quite possible that some people might experience testosterone suppression with Ostarine. In such a case, it is best to use Clomid for at least 3 weeks in the form of PCT.

Furthermore, a daily dose of 10 mg is suggested.

Ostarine vs Other SARMs

How does Ostarine fare in comparison to some of the other SARMs?

Let’s find out…

Ostarine vs RAD140

When comparing the two SARMs, it’s important to note that RAD140 is supposed to be more powerful than Ostarine. As such, Ostarine happens to be a better choice for most beginners or first-timers than RAD140. Even though RAD 140 results are likely to be better it is a SARM that should be used by those that have prior experience of taking SARMS.

The general rule is that if you experience no nasty or adverse side effects during the 8-week 25mg Ostraine Cycle, then you can move on to RAD140 in the subsequent cycle.

While Ostarine and RAD140 can both be used for bulking, Ostarine at a lower dose is preferred for a cutting cycle.

Ostarine vs Ligandrol

Ligandrol is one SARM that is supposed to be great for bulking. As a matter of fact, it happens to be an even better choice than Ostarine.

Ligandrol not only increases muscle mass but is also great for enhancing strength. It can help burn fat too and leave you with lean muscle mass.

Ostarine vs Andarine S4

Andarine S4 is known to be great for cutting. Ostarine too can be used for a cutting cycle, as mentioned above but Andarine can have a lot of side effects such as vision changes and a yellow tint.

Thus, Ostarine is a better choice when trying to lose excess body fat.

Ostarine Vs YK-11

YK-11 Myostatin is the most powerful SARM when it comes to bulking. Unlike other SARMs, it inhibits the production of a protein called myostatin that encourages catabolic action in your body. Not just this, it also increases another protein called follistatin that increases anabolic activity. Thus, it not only enhances anabolic activity in your body and promotes muscle growth but also prevents muscle loss.

However, this SARM is not meant for first-timers. If you are someone who is just starting out with SARMs, you should not go for this and begin with something milder such as Ostarine or LGD 4033. Ostarine MK 2866 is a better choice for beginners to gain muscle.

You can begin your first cycle with Ostarine and then progress to YK-11 in the next cycle.



What does Ostarine do to the body?

Ostarine is a SARM that binds itself to selective androgen receptors in your body. It can help you gain muscle as well as burn fat. In other words, it can be used for both bulking and cutting.

Is Ostarine a steroid?

Nope, Ostarine is not a steroid. It is a SARM and it is being extensively used by bodybuilders to gain muscle as well as to burn fat. However, using Ostarine for bodybuilding purposes is illegal.

Does Ostarine shut down testosterone levels?

Even though there is not enough clinical evidence to suggest that Ostarine MK 2866 can suppress testosterone production in your body, anecdotal evidence shows that it can do so when taken in large doses.

Does Ostarine give you energy?

Yes, Ostarine can help increase both energy and endurance. This is why it gives professional athletes an undue advantage. No wonder, it happens to be on the prohibited substance list of WADA.



Ostarine MK 2866 seems like a great alternative to anabolic steroids but not much is known about its side effects till now. Whatever evidence exists, comes from actual user reviews and it should not be ignored.

A better alternative is to use legal SARMs such as those marketed by Brutal Force since they are safe, effective, and 100% legal!

Hi, I am Nick Jenkins, the founder and Chief Editor of CimaB-Sa.com. I am a passionate bodybuilder with 15 years of experience. I have also worked as a gym instructor for 8 years now and have extensive experience in both bodybuilding and weight loss. When I am not in the gym I loves spending time with my lovely wife and kids aged 7 and 4.