YK11 Myostine Overview

YK11, also known as Myostine, is considered one of the strongest SARMs on the market. In fact, it’s so strong and has comparable anabolic activity to steroids that it may actually be a synthetic steroid that was mislabeled a SARM in the first place.

YK11 Myostine Benefits

There are 3 primary benefits that have been observed in both initial studies and user-reported reviews.

YK11 may block Myostatin, allowing continues lean body mass gains.

YK11 may be comparable to testosterone in its ability to build strength in muscles.

YK11 shows potential for fast, large gains.

YK11 Myostine Dosing Recommendations

User reviews suggest that the ideal human dosage for YK11 is 2-5mg twice per day for eight weeks (a total of 5-10mg per day for men).

Anecdotally, some users suggest increasing the dosage to 20mg per day in total over the course of a cycle, although it’s best to start at a lower dosage and find your sweet spot.


5-10mg total per day split into two doses.


0.5-2mg total per day split into two doses.

YK11 Myostine Stacking

There have been quite a few anecdotal reports from users who have stacked YK11 with RAD140 with incredible results.

Users report increased strength and an increase in lean muscle mass similar to testosterone results but without the water bloat. It works great for users looking to bulk with lean, dry gains.


RAD140 (Testolone) – 15-30mg
YK11 (Myostine) – 5-10mg

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