Ostarine (MK2866): The Review (Updated August 2019)


A brief history to Ostarine

So, you want to know more about ostarine. You want to know how it will help you with fat loss and muscle growth. In this article, we will try to answer all your queries. We will try to cover almost all the aspects including benefits, cycle, and side effects.

What is Ostarine?

Ostarine is a SARM developed by GTx laboratories. Initially, it was introduced as a potential therapeutic aid to help cancer patients to prevent muscle waste. Ostarine is considered safer and more effective than other SARMS since it has gone through extensive research before introducing for the use of common people. In fact, some studies are still going on to prove the efficiency of this SARM.

In the early 2000s, bodybuilders started taking ostarine for muscle growth. Now it is one of the most popular SARMs in the world that can be used for multiple purposes that include recomping, bulking, and cutting. You can use it to achieve your any fitness goal. Whether it is gaining muscles or cutting fat, ostarine can help in both.

Unlike other SARMs, it binds to androgen receptors of your muscles and bones without influencing other organs and tissues of your body. As it does not convert to the estrogen, you can expect clean and lean benefits.

How Does It Work?

As stated earlier, this SARM binds to androgen receptors in bone tissues and muscles. These receptors are specifically programmed to get information on steroidal hormones including DHT, testosterone, and estrogen. Ostarine stimulates these receptors and mimics the activities of the exogenous testosterone in the human body.

Is Ostarine Safe?

SARMs are not normally considered safe. However, ostarine is a selective SARM that affects your cellular receptors selectively. Therefore, it does not offer any typical side effects. Also, it is considered safe compared to the other SARMs. It will not cause unwanted hair loss or growth and virilization in females. Also, you should not be bothered about gynecomastia while using Ostarine. Still, it is a powerful compound and might cause some minimal side effects when ingested. As a result, there might be mild suppression in natural testosterone production. It can cause a headache as well.

You can make the process more effective and minimize the effects by following regular protocol. Follow a 12-week cycle. However, the cycle period will depend on the purpose of usage. We will discuss the cycle later in this article.

What Should You Expect from Ostarine?

The most noticeable effect is muscle growth. It prevents muscular dystrophy and muscle wasting as well. Here are the details of other effects of the Ostarine.

Lean Bulk

According to clinical study reports, when ostarine tasted on 120 healthy but senior people for a cycle of 12 weeks, they noticed an improvement in their overall fitness. They were taking low doses only 3 mg per day. But the impact was noticeable. But the builders gain up to 8lbs of hard and clean muscle with 25 mg per day by following the same 12 weeks cycle.

Permanent Result

The major benefit of the ostarine is that the result will be permanent. You might lose a little. However, the difference will not be significant and noticeable.

Boosts Bone Health

When you age, your body will start producing less testosterone and that will impact your bone health. Ostarine will boost your bone density and strength and it will minimize fracture risk.

Better Insulin Resistance

Ostarine can also be used as a safe alternative for anti-diabetic drugs. It is known for reducing the blood sugar level. Also, it will improve your insulin resistance.

Good Lipid Profile

Ostarine can reduce Triglycerides and LDL levels. But the downside is that it might reduce the HDL level that is considered beneficial to cholesterol.

Ostarine Cycle

The dosage of ostarine will vary significantly ranging from twenty-five mg to fifty mg per 24-36 hours depending on the purpose and age. The best dose will be 20 to 30 mg for a cycle of six weeks. You can extend the cycle when you notice positive changes. We will start noticing visible results within four weeks. If you find that it is effective, you can extend cycle up to 12-week. When the cycle is complete, you will have to wait for four weeks to start the next cycle.

Also, the dose or cycle will vary depending on the purpose. For example, if you are taking ostarine for bulking or gaining muscles, you can take 2-30 mg for around four to six weeks. Here PCT is not required. You can also consider a high dose of up to forty mg for a cycle of eight weeks if you weigh more than 210lbs. But yes, you will need PCT for this cycle.

For recomping, the suggested dose is ten to twelve mg for four to eight weeks. When you use it for cutting, then you can consider a dose of ten to twenty mg and the cycle needs to be between four and six weeks.

When Should You Take Ostarine?

Ostarine comes with a twenty-four hours life. You should only take ostarine once a day. You can decide the time depending on your convenience. You can take it every morning.


  • Boosts lean muscle growth and strength
  • Ensures fast recovery after workouts
  • Provides increased endurance and bone strength
  • Prevents muscle, bone, and joint issues
  • Decreases cholesterol level
  • No bloating and liver toxicity

Side Effects

Side effects are rare if you follow the regular dose and cycle. However, you can expect the following possible side effects.

  • Headache & lethargy
  • Suppression in testosterone production
  • Mild acne and nausea
  • Back pain

Ostarine is the most promising SARM, known for offering a number of benefits. The key benefit is that is fits to almost all types of bodybuilding programs. Be it a cutting cycle, recomping, or bulking cycle. It enables users to gain hard permanent muscles. In addition, it will contribute to improved energy, heart health, and overall fitness. In brief, it will improve the quality of your life. All you need to do is to follow the cycle and right dose regularly. Overdose and longer cycle might cause side effects. Also, make sure that you are buying ostarine from reliable and reputed sources.

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