S-23 is a potent investigational Selective Androgen Receptor Modulator (SARM) known for its powerful anabolic activity and ability to promote lean muscle mass while reducing fat. Originally developed to function as a male hormonal contraceptive, S-23 has gained attention in performance enhancement circles due to its significant strength gains, hardening effects, and its ability to retain muscle during calorie deficits. It binds selectively to androgen receptors in muscle and bone tissues, potentially mimicking the effects of testosterone without the typical side effects of anabolic steroids.
S-23 is often considered a next-generation SARM for users seeking a more aggressive physique recomposition or cutting cycle. It’s commonly stacked with other SARMs like GW-501516 or RAD-140 for synergistic effects.
CAS Number: 1010396-29-8
S-23: The Ultimate SARM for Hardcore Muscle & Strength Gains
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Promotes dry, lean muscle gains
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Supports intense strength increases
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Assists in fat reduction without muscle loss
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Encourages a hard, vascular look
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Short half-life allows flexible dosing strategies
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