Ostarine (MK-2866), also known as Ostabolic and Enobosarm, is one of the safest, mildest and most researched SARMs that, despite its mild nature, can give great results in terms of increased lean muscle mass.

Originally developed by GTx Pharmaceuticals to prevent muscle atrophy (muscle loss) in people suffering from conditions known to cause muscle wasting such as HIV and cancer, Ostarine has completed multiple clinical and human trials in 2007, 2011, and 2016.

As of 2020, at the time of writing this guide, Ostarine is still considered to be in development, successfully going through numerous trials to one day be recognized as official treatment for muscle wasting diseases.

MK-2866 Benefits

Lean muscle mass gains with the help of Ostarine are not immense in any way, but it’s definitely the safest way to boost muscle considering a very mild nature of this currently most researched SARM.

Clinical trials and personal experience have shown increased muscle mass with proper diet and training. In a 12 week long study, subjects took 3mg (very low dose) of Ostarine every day and managed to get 3 lbs of lean muscle during that period, which is not a lot. However, average daily dosage for recreational users of 15 – 25 mg a day for the duration of 8 – 12 weeks is shown to pack on 5-10 lbs of lean muscle mass.

Ostarine at a lower dose is also successfully being used as a muscle-preserving bridge between steroid or stronger SARM muscle building cycles. This approach although good with the goal in mind can be a two edged sword and constant natural testosterone lab works should be conducted to monitor the levels and see if Ostarine negatively affects your levels, but more on that later.

Strength gains with Ostarine aro also quite noticeable and improvement in lifts should definitely be felt, especially in users who have never used any physique or performance enhancing compound before.

Fat loss is also another pronounced benefit of Ostarine. A great choice if you’re aiming for improvement of muscle to fat ratio, since this compound is initially designed to battle muscle wasting diseases, which means that when you’re on a cut, trying to lower your body fat percentage, Ostarine will help preserve your muscle mass.

MK-2866 Potential Side Effects

Natural testosterone suppression is one potential side effect and it is very much affected by the Ostarine dosage you are using and your natural genetic ability to sustain natural testosterone levels. However, even if the suppression happens on an Ostarine-only cycle, it is very mild and natural testosterone levels have no problem recovering in a few weeks following the end of the cycle.

All other side effects that recreational users have been reporting when on Ostarine are not experienced in clinical trials and should be taken with a grain of salt, meaning that the reported side effects are likely the product of bunk or fake Ostarine from questionable sources, which is why it is of extreme importance to purchase your SARMs from a reputable and trustworthy source.

It is not proven that Ostarin usage causes cancer.

MK-2866 Dosage & Cycle

15mg to 30mg per day is the best dosage for getting the most optimal results with no side effects (if you have real high quality Ostarine). Cycle duration should be anywhere from 8 to 12 weeks, no less. Half life of Ostarine is 24 hrs which means you should take your dosage once every 24 hours.

MK-2866 Post Cycle Therapy

There is absolutely no need for a PCT protocol after an Ostarine-only cycle, if you stay within the recommended daily dosage and cycle duration. Any natural testosterone suppression that could potentially happen can be reversed and levels recovered in a matter of a few weeks.

Now using Ostarine as part of a Steroid Cycle PCT (Post Cycle Therapy) is something that recreational steroid users frequently employ, and the idea and facts behind it are very sound. As a SARM, Ostarine selectively binds to the androgen receptors in muscle tissue and continues to keep them active while PCT drugs regularly used during PCT such as Tamoxifen and Clomiphene do their part in bringing natural testosterone levels back to normal, which is a synergy that prevents loss of muscle mass.

However, like I previously said, Ostarine, especially in higher doses can cause natural testosterone production suppression, so you definitely wouldn’t want to use too high of a dosage in your PCT. On the other hand, Ostarine-induced suppresion isn’t too much of an issue because when used in conjunction with a SERM like Tamoxifen and Clomiphene, the stimulation of the HPTA by these will offset any mild suppression caused by Ostarine. So PCT with Ostarine, Tamoxifen and/or Clomiphene offers both bringing natural testosterone levels back to normal and keeping androgen receptor activity increased, which leads to more muscle mass preservation. If you decide to use Ostarine as part of your PCT, a daily dosage of 15mg is considered safe and optimal.

MK-2866 Legality

As of 2020, Ostarine or MK-2866 is absolutely legal everywhere except Australia where it is considered a Schedule 4 Prescription Compound by TGA. If you aren’t from Australia you won’t have any issues buying and using Ostarine.

However, when it comes to competitive sports, Ostarine together with other SARMs is listed as a banned substance by almost all anti-doping sports bodies. You should definitely not use it if you are a professional athlete.

MK-2866 Where To Buy

There are many online companies out there that claim to sell SARMs, but you can’t for sure really know whether what you’re buying from them is the real thing until you’ve seen it work on you and given you results. The only online company that I personally trust in, have tried and been extremely happy with when it comes to results is Chemyo. You can check their MK-2866 (Ostarine) here: CHEMYO

MK-2866 Overview

A safe and mild SARM with good lean-muscle mass increasing ability, especially in first time users. Able to increase strength and help in muscle mass maintenance while cutting. Side effect friendly. It mildly reduced natural testosterone at higher doses. It is taken 15-30mg every day for 8-12 weeks for optimal muscle building results. Can be successfully used as part of steroid cycle PCT regimen in combination with tamoxifen and/or clomiphene. Intermediate to advanced steroid users will find Ostarine extremely mild with not much benefit. It’s much more beneficial for beginner users and females.