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YK-11
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YK-11
Androgens & SARMs
About
History
Charts
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A research compound often grouped with SARMs, studied for myostatin-related pathways, with very limited data.
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Class
Research compound
Route
Oral
Typical range
5 to 10 mg/day
Half-life
Not well established
Schedule
Once or twice daily
Educational summary. See Sources & research below for the underlying studies.
What it is
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YK-11 is often grouped with SARMs, but it is structurally a steroidal compound and the research on it is very limited. It is investigational, not an approved medicine, sold for research only.
• Status: investigational, very limited data
• Studied for myostatin-related pathways
• Oral, so there is no injection
How it works
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Studied for effects on myostatin, a brake on muscle growth.
• May influence follistatin and the myostatin pathway
• Acts partly like a steroidal compound, not a clean SARM
• Long-term safety data is lacking
Dosing and mixing
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Reference tiers only. Track the dose you are already taking.
Low
About 5 mg per day
FOR The most conservative researched amount
BENEFIT Often picked as the lower-exposure tier given the limited data
Standard
About 5 to 10 mg per day
FOR The commonly cited research range
BENEFIT The range most often cited in research discussions
High
About 10 mg per day
FOR Upper end seen in some research
BENEFIT A higher-exposure tier with the most limited safety data
Schedule: Once or twice daily by mouth. Research discusses several weeks, then time off.
Beginner ramp: Start at the lowest researched amount and stay conservative, the data is thin.
Ranges are reference only, not a recommendation. See Sources & research below.
How to take it
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Taken by mouth. There is no injection site.
• Measure liquids carefully, concentrations vary
• Keep the timing consistent day to day
• Pair any research with a knowledgeable clinician
What to expect
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Early on
Reports are mostly anecdotal given the limited research.
Several weeks
Strength and fullness are commonly discussed, with little formal data.
After use
A recovery period for natural hormones is commonly assumed.
Side effects
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Commonly reported
• Likely lowers natural testosterone
• Possible strain on the liver given its structure
See a clinician if
• Yellowing of the skin or eyes
• Lasting fatigue or low mood
• Any reaction that worries you
Storage
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Keep it stable and clearly labeled.
• Store cool and out of direct light
• Keep away from children and pets
• Label clearly as a research compound
Sources & research
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Limited data
YK-11 has only early laboratory research and no approval. Treat all claims cautiously.
Sources are provided for education and are not exhaustive. Where a source names a specific trial or journal it is shown above; always confirm with a licensed clinician.
Educational and research information only. Not medical advice. Always confirm dosing and safety with a licensed clinician.
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