Ostarine Ostabolic (MK2866)

Many of us in the bodybuilding and weightlifting world are stubborn when it comes to learning new things.  We have been burned too many times listening to tips and bro science at the gym.  Also, let’s face it, our gym buddies really don’t care about our bodies so their advice isn’t exactly trustworthy.  This is why you will rarely hear about certain new things that are out there such as Ostarine Ostabolic (mk2866).


Ostarine Ostabolic (mk2866) is a SARM (selective androgen receptor modulator) which will help you build lean muscle mass, heal injuries, recover, repair, help you lose fat, and help prevent muscle wasting.  It does all this without causing the nasty side effects found in other drugs and anabolic steroids.


Ostarine Ostabolic (mk2866) is still in clinical testing by the pharmaceutical company GTX and was originally developed by one of the largest companies in the world Merck.  Their intent is to create a compound that helps fight wasting of the muscles and bones.  Research companies have introduced it into fitness to help athletes achieve performance-enhancing benefits.  I will discuss how you too can use it to your advantage later in this article, but first, let me explain how it works its magic.

How it works

Since Ostarine Ostabolic (mk2866) is a SARMs (selective androgen receptor modulators) it binds to the androgen receptors.  The difference though between it and anabolic steroids is it selectively binds.

What it doesn’t do

This means you don’t have to worry about nasty unwanted side effects from anabolic steroids such as:

  • Loss of head hair
  • Skin problems including acne and oil
  • Prostate pain and enlargement
  • Shutdown of your reproductive system (testes and pituitary glands)
  • Fertility loss
  • Insomnia
  • Water retention
  • Gynecomastia
  • Injection problems like infections and scar tissue
  • Heart damage
  • Liver damage
  • Anger and/or aggression issues

What it does do for you

Now that you know what Ostarine Ostabolic (mk2866) does NOT do, let’s talk about what it DOES do.

When you lift weights your muscles and soft tissues breakdown then must recover so you can get stronger and build more quality mass.  Anabolic steroids are great for increasing protein synthesis, but you might not realize that they actually do not help soft tissues recover.  This is why you might have noticed your injuries get worse on steroids.  Ostarine Ostabolic (mk2866) not only boosts lean muscle growth but it also helps strengthen soft tissues and bones in the process.  So you are much less likely to get injured, and you also can repair and recover quicker.

mRNA expression of the receptor activator of NF-κB ligand decreased after treatment, and uterine weight increased. Serum levels of phosphorus increased following ostarine treatment in intermediate and high-dose groups. Short-term treatment of osteoporotic bone with ostarine leads to improvement of several microstructural bone indices. – [JBMM]

All in all, here is what you can expect from Ostarine Ostabolic (mk2866):

  • Gains in pure lean muscle mass and strength
  • Mild fat loss
  • Soft tissue and bone repair/recovery
  • Prevention of muscle wasting even while not working out or during stress

ostarine ostabolic mk2866 review

GTx-024 (MK 2866) is the first SARM to reach advanced clinical trials and demonstrate a strong efficacy and safety profile. In this randomized, double-blind, placebo-controlled study, GTx-024 increased total lean body mass and improved physical function with no evidence of androgenic side effects in elderly men and postmenopausal women. – [PMC]

There is also some evidence that it will help with overall health and wellness such as boosting the immune system and helping with organ health.  Finally, you are much more able to keep your gains because they are pure vs. sloppy gains. 

How To Use

The cool thing about Ostarine Ostabolic (mk2866) is that you can use it several ways due to its versatility. It also is safe for anyone to use no matter if you are skinny, ripped, big, fat, out of shape, or in shape.  Males and females are free to use it since it is nonandrogenic.  In all situations, you should use it at between 12.5mg up to 50mgs a day, although most people use it right in the middle at 25mgs.

How to stack with steroids

Ostarine Ostabolic (mk2866) can be added to your anabolic steroid stack because of its healing abilities plus it will contribute to results without adding to side effects.

If you are using strength steroids such as Trenbolone, Anadrol, or Halotestin for example, then it is a must use to prevent overuse injuries common in powerlifters.

Those looking to cut down using steroids like Primobolan, Anavar, or Winstrol will love adding it in to boost fat loss and lean muscle mass, without the bloat.

How to use with SARMs

Ostarine Ostabolic (mk2866) is popularly used with S4-andarine (50mgs a day) and GW501516-cardarine (20mgs a day) in what is called the ‘triple stack’.  This stack will give you fat loss, lean muscle gains, and mild strength gains.  Overall it is a great recomposition and can be used by anyone no matter your fitness level to have excellent results.

Those that want to fix their joints should use it with Nutrobal-MK677 at 25mgs a day and do deloading (which is lowering the amount of volume and weights) for a period of time to allow the body to rest and repair.

Use in post cycle and bridge

Ostarine Ostabolic (mk2866) is not suppressive when used at 4 weeks or less at 25mgs or less.  This makes it a great option to add into your post cycle therapy, or your bridge, to keep your hard-fought gains and prevent muscle wasting.  It also helps you feel good during this period so you are still motivated to workout.  Stack it with Hcgenerate ES (5 servings a day) for maximum effects.


Ostarine Ostabolic (mk2866) half-life is approximately 1 day, so you can dose it once or twice in a 24-hour span.   Detection times seem to be up to 1 month, however, if you are a tested athlete cheating is wrong.  I do not endorse using this compound in that situation since it gives you an unfair advantage over your opponents.

Where to purchase

ostarine ostabolic mk 2866 for sale

The bad news is Ostarine Ostabolic (mk2866) is getting more and more difficult to find.  There are 2 reasons for this:  The first being the government crackdown on these types of compounds and the second being shady research companies putting out fake products.  Be aware that many sources lace their products with prohormones or are faked entirely.  Luckily sarms1.com is still operating and they sell a legitimate product.  Please go to our forums evolutionary.org and elitefitness.com for more information on how you can find a real source.


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