Ostarine (MK 2866): Dosage, Results and Side Effects

Ostarine MK 2866, also known as Enobosarm, is a Selective Androgen Receptor Modulator(SARM) which helps you look muscular from the outside and also preserves muscle mass, reduces body fat and prevents muscular dystrophy. And no, they are not just for men. In smaller doses, it is helpful in treating osteoporosis and muscle wasting in both males and females.Developed by GTx INC, a Memphis pharmaceutical company, Ostarine MK-2866 is known to be the most safest and widely used anabolic SARM among the others. It does not disturb or inhibit the natural activity of androgens.

You might be having many questions in your mind right now. What exactly are SARMs and why do so many people use them if it’s illegal? Are they safe? Why Ostarine MK 2866 is known to be the best SARM and how to properly use them? We’ve answers to all your questions and more.

Now before we explain what SARM is, it’s important to understand what is an androgen receptor.

Androgen Receptor

Androgens, namely the male hormone-testosterone, controls the healthy growth, maintenance and proper functioning of secondary sex organs and accessory glands in the body. They are produced by the leydig cells of testes in males and in very smaller quantities in ovaries of women which acts as a precursor to estrogen. These androgens bind to the androgen receptors, activating them. This androgen after binding to the androgen receptor plays a very important role in maintaining the skeletal integrity in men. Androgen receptors, also known as NR3C4(Nuclear Receptor subfamily 3, group C, member 4) is a nuclear receptor, hence explaining its binding-activating property

While some of these might help you better in bulking up, some of them help cutting down the extra fat better. Few can do both bulking and cutting effectively. Dosage differs in all of them and SARMs are taken in cycles and after its completion, some SARMs might require PCT(Post Cyclic Therapy) which shall be discussed.

SARMs are currently not approved by the Food and Drugs Administration(FDA) and are not legal due to its association with possible health risks like suppressed levels of hormones(PCT helps you get back in normal levels) and nausea. But they are definitely much safer than the detrimental side effects of anabolic steroids. They are currently legally used only for chemical research purposes for finding their uses in treating diseases related to muscle wasting or aging and cancer. Buying SARMs for bodybuilding through online won’t put you in trouble in any way though.

SARMs and anabolic steroids

Both are banned and illegal products and both help you in gaining muscle mass whilst getting rid of the extra fat. Both also work in similar ways except SARMs selectively targets the androgen receptors, mimicking the testosterone. Both come with various side effects but the side effects you get from using anabolic steroids are really bad for you and something you would definitely not want.

They cause harm to your liver, may cause infertility in both males and females, men may develop breasts, women may notice an undesirable change in their voice which is often not reversible.

Yes, SARMs do have side effects too. It may suppress levels of hormones like testosterone, which anabolic steroids suppress to a greater extent. Sometimes, people who use Andarins, may notice change in their vision. But most of the side effects are reversible and get normal once you stop using them, natural hormonal balance is brought back to it’s normal state. Most SARMs in lowerdoses don’t cause any much significant negative effect. The suppression of testosterone is corrected by a PCT after every cycle.

What should Ostarine MK-2866 be used for?

If this is your first time using SAcas, then Ostarine is perfect for you!

Ostarine MK-2866 is the safest to use, due to its very mild nature. One of the main benefits that comes with Ostarine is that it can be used both for bulking and cutting.

Being anabolic in nature and lacking the property to aromatize it increases muscle mass significantly without causing retention of water in your body. This prevents your body from looking flat and dry. It burns out the fat effectively making you look fine and sharp. This is because, unlike steroids, Ostarine does not get converted to estrogen. Not just that, we also found Ostarine helps improve your body metabolism and mental cognitive skills and increases bone density by making your bones absorb more calcium from the food you eat.

Ostarine is very mild, so it is best for beginners and anyone wanting to not bulk up too rapidly. It gives you the result you want but takes a little time but bonus, it does not get rough on your body.

Ostarine (MK 2866): Pros

The following are the pros of using MK 2866:

  • Produces significant muscle gains.
  • Increases your natural stamina and keeps you energetic throughout the day.
  • Increases insulin resistance.
  • Contributes towards good overall health.
  • Does not harm your organs
  • Improves your body’s natural strength.
  • No side effects if you stick to the recommended dosage.

Dosage: How to use Ostarine MK 2866

Our team recommuses you to use it in a cycle of 12 weeks. Reports from users say 8 weeks of bulking and 4 weeks of cutting give you the best results with zero to a very limited side effects, most of which go away once you stop the cycle. Using the product for more than 12 weeks increases the chances of hormone suppression.

Being aware of how to use Ostarine MK 2866 SARM exactly to your benefit and requirement is very important.

Cancer patients are given only 3mg per day and gain 2-3lbs after using for 4 months. Bodybuilders take 8-10 times more than what’s given to cancer patients- that is, 25mg per day for a 12 week cycle. This gains you 5lbs-6lbs by the end of the cycle.Ostarine has a half life of 24 hours so most bodybuilders prefer taking their daily dose all at once while some do prefer taking in smaller doses 2-3 times day. Women, on the other hand, prefer taking 10mg per day.


SARMs are often given in stacks. Ostarine is stacked with Ligandrol (LGD-4033) and Candarine for bulking and cutting. Many people know that Lingadrol help in bulking, but a lesser know fact is that it helps in cutting by preventing water retention as well.Candarine helps promote fatty acids metabolism. If you take 25mg/day of Ostarine, you are supposed to take 20mg per day each of both LGD-4033 and Candarine. Stacking is not always mandatory with Ostarine though. You may carry out the procedure without it but we do recommend stacking.

This is a 12 weeks cycle, by the end of which you start noticing desired changes to your body. But like most things, Ostarine does have side effects to. After the completion of the cycle, there might be a decrease in the natural release of Testosterone. This suppression is corrected by a 3-4 weeks of PCT.

PCT-Post Cycle Therapy:

Now, there is no known clear answer to this. This is based on products with similar composition and workin and reports by various users.

Since Ostarinedoes not block the Hypothalamic-Pituitary-Testicular Axis, PCT is not needed when Ostarine is taken in lower doses of 3mg-10mg. But yes, you positively do require a PCT when taking Ostarine in higher doses.

You definitely don’t need hardcore PCT like Clomid or Nolvadex after Ostarine MK-2866, even if you take 25mg per day for 12 weeks. But you do require a mild anti estrogen and aromatase inhibitor.

Aromatase in the body, reduces the production of testosterone which in turn increases the production of estrogen. With the use of a PCT cycle, this does not happen and a beautiful hormonal balance is maintained.

Red PCT 2.0 can be taken for 4 weeks and you will be perfectly normal, feeling energized and in love with your body. Red PCT is made from 7 natural aromatase inhibitors- Agaricus, Bisporus, Luteolin, Apigenin, DIM, Resvaratrol, Grape Seed Extract and Acacetin- all of which are obtained from plants.

After a four week PCT, you must take a 3-4 weeks break. Only after this time off you may start a SARM cycle again. This way you get the best results.

If you compare Ostarine to others SARMs like RAD-140(Testolone), RAD-140 is a much stronger drug and PCT becomes absolutely mandatory. Ostarine and Lingadrol are the safest for beginners and can be taken in smaller doses without a PCT cycle later(we suggest you  to add a PCT cycle anyway)

Now that you know everything SARMs and Ostarine does, you should also know that these come with side effects, they are not as hazardous as those of anabolic steroids though. They cause absolutely no damage to liver or any organs and females don’t develop male like voices. SARMs are also beneficial for treating diseases like cancer-which was its initial purpose anyway. But since SARMs haven’t really been researched on that part yet, what we mentioned is based solely on what we noticed and what users have reported.Despite the side effects, people used and are going to continue to use SARMs anyway. So it is always better to know what to expect and not be unaware so that you may take needed precautions.

Side Effects of Ostarine MK-2866

Side effects are also the reasons it is banned.

  • Ostarine supposedly raises levels of Estradiol in blood, causing hormonal disturbances.
  • You may experience not having a sound sleep and have frequent nightmares which makes you a little moody.
  • Women notice change in their menstruation patterns.
  • People may suffer from joint pains and muscle exhaustion which is an other reason why you should go for a PCT after a SARM cycle.
  • Feeling tired and lazy.

Most of these do go away after a PCT cycle though, which is probably why despite having side effects, so many people still buy them. Because hey, it is effective as well and gives you what you desire.

Where should you buy Ostarine MK-2866?

Umbrella Labs is a US based North American supplier best known for its genuineness and purity in the products sold. Not just OstarineMK-2866, you can find all SARMs plus the PCT chemicals here.

Currently, SARMs are only sold under the purpose of research and not for us traditional uses.  This is how bodybuilders buy them anyway.

Buy yourself a bottle of Ostarine MK-2866 from the official website of Umbrella labs today – Click here to buy

For other SARMs and PCT chemicals – Buy here

Testimonials by real users

I used to go to gym with two of my friends regularly. They kept getting muscular quickly but I was so slow. One day when I was feeling too sad, my friend suggested me to start using SARMs and I must tell you, one complete cycle in and I could see how well my body developed. I’m so confident about myself now and don’t shy off anymore.Gotta love SARMs”.

Scott Balor

I wanted to bulk up my muscles so I started using steroids. I did bulk up but hair grew at unwanted places, I started developing breasts  little by little and I would often feel exhausted. My girlfriend, who is a nurse and also has an idea told me I should immediately stop using steroids since they pose life threatening threats and start using safer SARMs called Ostarine MK-2866 instead. I’ve been using them for over a year now and I feel so better. I don’t feel that exhausted anymore and I haven’t had any harmful side effects as of yet. And I also look more muscular than before. I’m loving it!”.

Patrick Biersack


Q. Are SARMs legal?

A. No, SARMs have not been legalized by Food and Drugs Administration (FDA) as of yet due to its potential health risks. They are legally sold for research purposes though.

Q. Is a PCT compulsory if you are using SARMs?

A. This completely depends on the drug and dose you are using. Drugs like Ostarine MK-2866 and Lingadrol do not require a PCT when taken in doses between 3mg-10mg/day. While drugs like RAD-140 require a PCT even in lower doses due to its potency.

Q. Are SARMs safer than anabolic steroids?

A. Yes, SARMs are much safer than anabolic/androgenic steroids. SARMs work selectively on androgenic receptors andworks uniquely on each different tissue, posing no threat to liver which anabolic steroids do. Steroids also cause extreme hormonal imbalance, tumors, infertility and deepening of voice in females.

Q. Is it true that SARMs are used in treatment of cancer?

A. SARMs are currently being researched on that field more in depth. In fact, 60 years when it was initially introduced, it was for treating muscle wasting in cancer patients. One day it might be seen as one of the main treatments in curing muscle wastage.


Ostarine MK-2866 helps you to bulk up and look ripped and make you feel confident about your body. Dosage is a very important factor and it is always better to follow the instructions given. Males can use up to 25mg per day while woman can go for 10mg per day for 12 weeks. As per your dose, we have explained the requirements of PCT in our article. But since none of the SARMs products are FDA approved and are not promising to diagnose or treat any diseases, it is always better to talk to a doctor prior using them for your safety.

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