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Ostarine (MK 2866) Guide: Cycle Results, Dosage, & More (Update 2023)

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Ostarine, otherwise known as enobosarm or MK 2866, is easily the most popular selective androgen receptor modulator for increasing lean body mass on the market now… and it isn’t hard to see why.

Just one cycle of Ostarine MK 2866 will rapidly accelerate protein synthesis, helping your body promote muscle growth at a rate that rivals even some of the medium-tier anabolic steroids (like Anavar).

Well unlike most of the snobby medical writers out there, I actually TOOK Ostarine MK 2866 myself, to see the kind of results it actually gives.

In fact, several websites even STOLE my Ostarine results pictures to sell their own FAKE scammy SARMS—and I’ll give you proof in this article.

So, if you want to learn more about Ostarine, the best dosage to take, results to expect, and more, then here it is from someone who actually took it.

What is Ostarine (MK-2866)?

Before I get into my experience with Ostarine, and show you my results with it, I want to give a brief explanation of this compound first.

Ostarine belongs to a class of drugs known as SARMs, which were initially developed to treat cancer patients rapidly losing muscle mass.

While SARMs have been around since the 1940’s, they didn’t get much traction until GTx Pharmaceuticals came around in 1997.

This company, also known as GTx Incorporated, quickly began researching Ostarine after they discovered how powerfully anabolic it was [R].

Buy USA Made Ostarine Here!

In fact, this company fast tracked Ostarine (MK 2866) through FDA Phase II clinical trials, and we learned a lot from these research studies.

One thing we learned for sure about Ostarine, is that it’s a very powerful anabolic drug that has extremely potent, steroid-like effects.

Mechanism of Action

All SARMs, from RAD 140 to Ligandrol to Ostarine, work in the exact same way—by binding to androgen receptors in your skeletal muscle tissue, but by being very selective about it.

Shortly after ingestion, Ostarine MK 2866 quickly begins directly stimulating androgen receptors, increasing your body’s metabolic rate, increasing the rate that you burn fat, build muscle, and more.

After binding to these androgen receptors, SARMs such as Ostarine then signal your body to start building new muscle tissues, increasing lean body mass, and speeding up recovery time.

One major difference between SARMs and steroids however, is that while steroids bind to all androgen receptors they come into contact with, SARMs such as Ostarine were designed to only bind to skeletal muscle androgen receptors.

This means that when taking a SARM like Ostarine, users can get steroid-like effects, without many of the negative side effects that often come with using steroids, such as an enlarged prostate, for example. [R]

That isn’t to say that Ostarine is 100% side effect free—there’s still a lot of research to be done, but preliminary research is very promising. So far, most research suggests that Ostarine MK 2866 is an extremely safe and effective way to increase bone density, muscle strength, and more.

Ostarine Legality

Ostarine MK 2866 is not technically a dietary supplement, but rather an unapproved drug, or a “research chemical” that is legal to buy and sell online for “research purposes.”

That being said, while MK 2866 is fully legal to buy and sell, it is a banned substance. Both the National Collegiate Athletic Association and the World Anti Doping Agency have banned Ostarine from sports. [R]

My Ostarine Review

Ostarine before and after results rad 140 stack cycle

Before I get too deep into the clinical research, I want to show you the results I got from a cycle of Ostarine (MK 2866) and RAD 140.

Pictured above are the results from my third SARMs cycle. I gained 10 pounds of muscle and lost 4 pounds of fat in just 30 short days.

Buy USA Made Ostarine Here!

While I normally get my SARMs from Proven Peptides, I chose to try out the Ostarine and RAD 140 from Science Bio for this cycle—and they didn’t disappoint.

My Ostarine Results

As you can see, the results I got from my Ostarine (MK 2866) stack were incredible—even in just 30 days, my body transformed entirely.

In fact, I had such incredible results, that several other SARMs vendors stole my review pictures to promote their own scammy, fake Ostarine.

Read that article if you want to see how a ton of SARMs companies are using results pictures they stole from me to promote their own products.

Overview of my Cycle

Overall, my Ostarine cycle was great. I put on a ton of muscle, shredded tons of fat, and it happened rapidly, too. I recommend Ostarine for ANYONE who wants to do a body recomposition.

  • Ostarine Dosage: 25 mg Per Day
  • RAD 140 Dosage: 20 mg per day
  • Length of Cycle: 30 Days (4 Weeks)
  • PCT Protocol: Natural Test Booster

Within a few days of my first dose, I noticed a huge increase in strength, a higher level of energy, and much better pumps in the gym.

MK 2866 works very quickly, because it has a half life of only 24 hours—so you get fast results, and it clears your system very rapidly, too.

If you want to get results like mine, try grabbing two vials each of the Ostarine (MK 2866) and Testolone (RAD 140) from Science Bio.

Then, take one full dropper of each per day for 60 days straight. Follow it up with a post cycle therapy (PCT) which I cover later in this article.

Ostarine Benefits

Ostarine Benefits Banner Ad

Ostarine (MK 2866) is probably the most well-researched SARM out there, so thankfully there’s a lot of clinical studies to go off of, showing improved bone density, less joint pain, and much more.

The most obvious benefit of MK 2866 is that it helps users build lean muscle mass, and get in absolutely amazing shape with minimal side effects, but there’s also many more health benefits beyond this.

Here’s A Few Ostarine Benefits:

  • Rapidly Build Muscle Mass
  • Accelerate Protein Synthesis
  • Improves Lean Body Mass
  • Enhances Physical Function
  • Increased Energy Levels
  • You Can Eat Way More Calories

Overall, MK 2866 is basically like being on an anabolic steroid without any of the decreased libido, low testosterone levels, liver damage, and of course the severe health problems.

Having been on an two Ostarine cycles (which I documented here), I can definitely confirm that all of these benefits live up to the hype, and there are VERY FEW if any side effects.

Rapid Muscle Growth

The most obvious benefit of Ostarine is that it helps users gain lean muscle mass, at a rate comparable to some anabolic drugs (like Anavar at high doses for example).

In fact, one clinical study found that even doses as small as 1 mg and 3 mg led to significantly more muscle gains than placebo. [R]

The study found that even this tiny Ostarine dosage led to an increase of 3 pounds of lean muscle mass in 4 months, WITHOUT working out.

When you consider that most recreational users take an Ostarine dosage that’s 10x higher than this, and they also workout while on cycle, it isn’t hard to see how this SARM can give incredible results.

Decrease Body Fat

In addition to helping users build lean muscle mass, Ostarine is also known for its ability to help users get shredded and melt off fat tissues. Many users report involuntary weight loss on MK 2866.

While no studies have been done on the fat loss effects of Ostarine, there’s a ton of anecdotal evidence and user reports to confirm this, and it’s likely through stimulating the central nervous system.

Typically, you can expect to lose 10-15 pounds of fat from a 12 week cycle of Ostarine, although this will vary greatly depending on your dosage, diet, genetics, workout routine, and more.

How to Take Ostarine

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Ostarine hasn’t been approved by the Food and Drug Administration, so there’s technically no recommended dosage for this compound yet.

That being said, most body builders and recreational users agree that taking between 25 mg and 50 mg of Ostarine is the sweet spot.

Recommended Dosage Overview

Since Ostarine isn’t approved by the FDA, there’s technically no medically researched proper dosage (like I said) for human usage. With that in mind, however, here is what most bodybuilders recommend.

  • Beginner Dosage: 15 mg per day
  • Intermediate Dosage: 25 mg per day
  • Advanced Dosage: 50 mg per day

My first Ostarine cycle was at 25 mg per day, but some people who are less experienced (or more afraid) may choose to start off with less.

When using SARMs such as MK 2866, it’s best to take your doses at the same time each day, to maintain an even level of the compound in your blood stream.

How to Stack It

Some users take a SARMs stack, which is where you take multiple SARMs at once, to build lean muscle, lose body fat, and improve gym performance and recovery time even more.

The idea is that even though SARMs will all help you build muscle and lose fat, each SARM will have a slightly different effect on the body.

If you’re a beginner, you may want to start by using just one SARM at a time, but that said, let’s take a look at some common stacks.

Sample Stacks & Cycles

Due to its versatility as a SARM, Ostarine is a great compound for both bulking and cutting stacks, as well as recomposition stacks. Your cycle should last at least four weeks, ideally 8 or 12.

Bulking StackCutting Stack
Ostarine (25 mg per day)Ostarine (25 mg per day)
Ligandrol (20 mg per day)Cardarine (10 mg per day)
Ibutamoren (25 mg per day)Andarine (50 mg per day)
Sample Ostarine (MK-2866) Stacks

In my opinion, Ostarine is one of the best SARMs out there, simply due to the fact that it can be used to accomplish so many different goals.

MK 2866 is a great bulking SARM, because it promotes lean muscle growth, rapid fat loss, and an increased level of strength.

It’s also a great cutting SARM, because it can help speed up fat loss while dieting, AND prevent the muscle loss that often comes from cuts.

Ostarine Safety Guidelines

guy lifting weights

Compared to other anabolic steroids like Trenbolone Acetate, MK 2866 is an absolute walk in the park. No hair loss, liver damage, breast cancer, no worries about a heart attack or anything. Just gains.

In fact, I didn’t experience any side effects at all from my two MK 2866 cycles, although some people do report mild testosterone suppression or even very slight hair loss (that stops after cycle).

Most of the Ostarine side effects can be mitigated with an AI and by also a proper post cycle therapy (PCT) which I discuss below.

Potential Side Effects May Include:

  • Increased Estrogen
  • Oily Skin & Acne
  • Mild Liver Toxicity
  • High Blood Pressure
  • Lowered HDL Cholesterol

While these side effects may seem scary, most clinical research suggests that Ostarine is very well tolerated, with very minimal side effects, so long as you check with your healthcare professional to make sure that you don’t have any pre-existing health conditions or auto-immune disorders. [R]

…and while I didn’t personally experience any major side effects on my Ostarine cycle, it’s still a good idea to educate yourself and be safe.

Post Cycle Therapy

The biggest health concern most people have regarding SARMs is whether or not they’ll shut down testosterone production in the body.

When it comes to Ostarine, clinical research suggests that this SARM does NOT suppress the body’s natural testosterone production. [R]

That being said, the studies didn’t use dosages as high as the ones that body builders use, so doing a post cycle therapy (PCT) is a good idea.

I recommend you read my guide on doing a SARMs PCT, because doing the right PCT can help you keep and maintain your gains after cycle.

Ostarine Summary

Chemyo Banner Ad SARMs

In conclusion, Ostarine is a very versatile SARM that can be used to build muscle, lose fat, increase strength, and transform your body.

Ostarine can be used to accelerate muscle growth while bulking, and it can also be used to keep muscle mass while on a cutting cycle.

Whatever you decide to use Ostarine for, I recommend you get it from a good source—Chemyo is currently my favorite, so I recommend the Ostarine for sale on their website.

Buy USA Made Ostarine Here!

Every product that they sell is 3rd party verified for purity, so you know you’re getting 100% pure muscle building, fat shredding SARMs.

Also if you do want to get some Ostarine, use code “MD10” to save 10% with Science Bio—you’ll save money on any SARMS you buy (not just Ostarine)!

Anyways, I hope you guys enjoyed the article—let me know if you have any questions down below, and as always, I’ll see you next time!

Frequently Asked Questions
❓ Are Selective Androgen Receptor Modulators Safe?

According to most of the research, SARMs are a safe way to enhance muscle growth, lower body fat levels, enhance athletic performance, and improve bone density with relatively low adverse effects.

Every SARM is still, however, an investigational drug for treating muscle wasting diseases, so they're technically not dietary supplements and technically are not FDA approved for human consumption.

❓ How Much Muscle Mass Will You Gain On Ostarine?

If you want a selective androgen receptor modulator that can build muscle tissue, Ostarine is a great bet. Just one cycle of MK 2866 rivals anabolic steroids in results. A single 8 week cycle of MK 2866 will typically get you roughly 15-20 pounds of muscle gain.

❓ Is Ostarine Good For Preventing Muscle Wasting?

MK 2866 is an amazing SARM to fight against muscle wasting syndrome, or simply just losing muscle tissue while you're on a cutting cycle trying to shred off excess fat at a caloric deficit.

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Christian
4 years ago

How did you feel when you stopped taking it?

Jon Anthony
5 years ago

Where’d you hear that? It sounds like bullshit to me.

Noah M
5 years ago

If I followed your dosages, how long would a bottle of each of these last me?

C
4 years ago
Reply to  Noah M

If you followed his dosages, a bottle would last about a day and a half. i.e. your dropping $50 bucks a day on this. (less if u buy the 60ml for 80 bucks, so thats 40 a day).
TRT is significantly cheaper.

Don
4 years ago
Reply to  C

Well this guy is an idiot, or didnt actually read the concentrations on the bottles. the bottles are 30-60ml at a conc of 25mg/ml. i.e. a bottle should last 8-12 weeks.

Jon Anthony
4 years ago
Reply to  Don

Took the words right out of my mouth, lmao.

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