Andarine (S4) · YK-11 · S-23
Evidence: ★★☆☆☆ · Status: Not Approved
In plain English
The more experimental SARMs — YK-11 also releases the "myostatin" brake that limits muscle, S-23 is the strongest and most suppressive, Andarine can literally tint your vision yellow.
How it works
Andarine — mild AR agonist, causes yellow-vision (binds retinal receptors). YK-11 — AR agonist and myostatin/follistatin modulator (removes a brake on muscle growth). S-23 — high-potency, strongly suppressive, studied as a male contraceptive.
Molecular target & official sources
AR (NCBI Gene) · YK-11 (PubChem CID 44224998)
Watch out
Minimal human data, strong suppression, vision effects (S4).
Helps with: Build Muscle & Strength
Availability & where to buy
Not widely approved. Not approved for general sale in most markets (Singapore included). Grey-market only — dose, purity and legality uncertain.
Common questions
Does Andarine (S4) · YK-11 · S-23 actually work?
Human-evidence rating: 2 of 5. The more experimental SARMs — YK-11 also releases the "myostatin" brake that limits muscle, S-23 is the strongest and most suppressive, Andarine can literally tint your vision yellow.
What are the risks or side effects of Andarine (S4) · YK-11 · S-23?
Minimal human data, strong suppression, vision effects (S4).
Is Andarine (S4) · YK-11 · S-23 legal or approved?
Regulatory status: Not Approved.