Myo-X (YK-11)

What is YK-11 (Myo-X)?

YK-11 is a man-made compound known as a SARM. That is short for selective androgen receptor modulator. Labs study how it acts on androgen receptors. Those are proteins in cells that pick up signals from testosterone.

YK-11 is built from DHT, a natural hormone. Labs study how it changes a protein called follistatin. Follistatin blocks myostatin, and myostatin limits muscle growth.

What researchers study it for

• Muscle growth signals. Labs study how more follistatin affects myostatin in lab models.
• Strength in lab models. Studies track strength changes across a research cycle.
• Bone building proteins. Labs study how YK-11 affects proteins tied to bone density.
• Liver enzyme levels. YK-11 has a methylated build, so studies track liver enzymes.
• Natural hormone output. Studies look at how it may lower natural testosterone output. That is why PCT often follows a research cycle.

What you get

Oral tablets, 5 mg each. The bottle holds 60 tablets, so the dosage per tablet is fixed.

How to store it

Store the bottle in a cool, dry place. Keep it out of direct sunlight.

Words you might not know

• SARM — a compound studied for how it acts on androgen receptors.
• Androgen receptor — a protein in cells that picks up hormone signals.
• Myostatin — a protein that limits muscle growth.
• Follistatin — a protein studied for how it blocks myostatin.
• DHT — short for dihydrotestosterone, a natural hormone.
• PCT — a plan used after a research cycle to help hormone levels return to normal.

Sold for laboratory research only. Not for human consumption.