What it is, how it works and what are the benefits.

What is YK-11?

YK11 is a selective androgen receptor modulator (SARM) aswell as a myostatin inhabitor. YK11 is a new SARM that is still being studied. Even though only a few studies have been performed regarding YK11 they have been very promising. Researchers have concluded that YK11 is one of the most powerful SARMs out there, directly binding to the androgen receptors and causing anabolic like effects.

YK11 was shown to be an appropriate anabolic SARM

Researchers found out that YK11 had a stronger anabolic effect than anabolic steroids but without the side effects, so you can expect a whole lot more information regarding YK11 soon. In 2011 researcher Yuichiro Kanno of the Toho University indeed concluded that YK-11 belonged to the SARMs family.

How does YK-11 Work?

YK-11 directly binds to the androgen receptors in the body. Besides it is a selective androgen receptor modulator (SARM) YK-11 also functions as a myostatin inhibitor.

Yk-11 Molecule structure

YK-11 is even more potent than Dihydrotestosterone (DHT). Researchers have concluded that YK11 increases Myf5, MyoD and myogenin more than DHT does. Myf5, MyoD and myogenin are proteins involved in muscle differentiation.

How to use YK-11

YK11 is perhaps the strongest sarm out there right now. The minimum recommended dosage is 5mg, from here on you can build up to 10-30mg if you feel comfortable enough. Of course, higher doses will also carry more side effects, so this is something you should think through before executing. YK11 has a short half-life of around 6-8 hours, so dosing twice a day is necessary. A lot of users absolutely love YK-11 for the strength gains it gives them,.

Because YK11 is a rather new SARM and it is still being researched, we only recommend stacking it with other SARMs such as MK-677 until we learn more about the possible side effects. In addition to YK11 being a very strong SARM, it also has the standard benefits that other SARMs provide such as strength increase, lean muscle gains and recovering faster from your workouts. The downside to YK-11 is that there have been no trials performed involving humans or animals.

YK-11 experiences

Most users of YK11 are very satisfied with the results they have gotten from their cycle. The sweet spot for YK11 seems to be around 20mg for most users. People who have run different SARMs in the past are amazed at what YK11 did to their bodies. Overall the reviews are very positive and users report losing bodyfat whilst gaining lean muscle, which is absolutely crazy to think about. Other users often stack YK-11 with other SARMs such as RAD-140 and MK-677 causing a synergic effect when combined.

YK-11 Dosage

The half-life of YK-11 is 6-8 hours which means that you need to time dose twice a day. For example 5mg in the morning and 5mg in the evening. Usually, a minimum of 5mg is used as a good dosage. However, make sure to start out with a low dosage and go from there. Currently, YK11 is still a research chemical, so exact dosages are difficult to determine. Experience has shown that a dosage of 5 to 20mg is an average dose that can give great results. You can expect increased lean muscle gains as well as insane strength gains.

What are the benefit and side effects of YK-11

YK-11 is without doubt the strongest SARM out there. Because YK-11 is still being studied by researchers there might be more side effects that are yet to be discovered.


  • Improvement of Lean Body Mass(LBM);
  • Improvement of Muscle Strength hand Physical performance;
  • Preventing the loss of muscle mass during weight loss;
  • Enhance Quality of life (QOL);
  • Hormone levels go back to baseline after usage;
  • Myostatin inhibitor.

Side effects:

  • Suppression of natural testosterone production (dose dependent);
  • Slight aggression increase;
  • Slight liver toxicity (dose dependent).

yk-11 promotes myostatin


As mentioned in this article, YK-11 is very impressive when it comes down to potential strength and lean muscle gains. These are the main reasons why YK-11 has gotten so populair. It is a very promising compound but clinical studies have yet to be performed, which ofcourse is a downside. The fact that YK-11 is a SARM aswell as a myostatin inhabitor is what differentiates it from other SARMs. This SARM should definitely not be taken lightly. Hopefully there will be more information available about this compound in the future.

YK-11 Literature