Compound atlas
Performance

YK-11

SARM / myostatin
Half-life
10h
approx. mean t½
Dose range
5–10 mg
typical, not prescriptive
Category
Performance
primary use-case
Single-dose decay
t½ = 10h · first-order model
~40h
to clear
1× t½
50%
remaining
2× t½
25%
remaining
~4× t½
6%
remaining
0%25%50%75%100%0m10h20h30h40h2.1d

How a single dose clears, assuming first-order elimination. The half-life is the biggest driver of how often you dose — start a cycle to see your own cumulative concentration curve.

Overview

A steroidal SARM-like compound studied for myostatin inhibition and rapid muscle gains. Sparse safety data; banned in sport.

Mechanism of action

Partial androgen-receptor agonism plus increased follistatin, lowering myostatin's brake on muscle growth.

Typical protocol

5–10 mg orally once daily; limited human data.

Storage

Room temp, dry, away from light.

Disclaimer

This page summarizes publicly available information. None of it constitutes medical advice, prescription, or recommendation to acquire, possess, or use any compound. Many peptides described are research chemicals not approved for human use in the EU. Consult a licensed physician.