YK-11 is a powerful myostatin inhibitor often categorized as a SARM, although its mechanism more closely resembles that of a synthetic steroidal compound. It’s one of the most advanced muscle-building agents available, stimulating massive anabolic activity through the activation of follistatin, a protein known to suppress myostatin — the compound that limits muscle growth in the body.
YK-11 not only promotes significant muscle gains, but it also supports increased strength and faster muscle fiber regeneration, making it a top choice for experienced users looking to break through muscle-building plateaus. Unlike traditional SARMs, YK-11 also exhibits partial androgen receptor activity, delivering intense results with relatively low water retention.
CAS Number: 1370003-76-1
YK-11: The Ultimate Muscle Builder & Myostatin Blocker
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Promotes rapid muscle growth via myostatin inhibition
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Supports strength gains and muscular density
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Encourages muscle fiber regeneration
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May enhance recovery and lean mass retention
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Ideal for experienced users aiming to maximise size
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All products independently tested with >99% purity levels.
