S4 (Andarine) is a moderately potent SARM known for its ability to build dry, lean muscle, enhance strength, and support fat loss while maintaining muscle fullness and vascularity. It binds selectively to androgen receptors in muscle and bone, helping users achieve a more defined, aesthetic physique without affecting other tissues like the prostate.

With a concentration of 1500mg per 30ml (50mg/ml), this formulation allows for precise dosing and efficient results. Users typically report:

• Improved muscle hardness and density

• Visible fat reduction without catabolism

• Increased vascularity and strength

• Minimal water retention

S4 is especially popular in cutting cycles and recomposition phases, where users aim to shed fat while preserving or gaining lean muscle mass. Unlike anabolic steroids, S4 does not aromatize into estrogen, eliminating the risk of gynecomastia or bloating.

However, a known side effect of S4 is temporary vision sensitivity (such as a yellow tint or difficulty adjusting between light and dark), which is dose-dependent and typically subsides after discontinuation.

Common dosing protocols range from 25–50mg per day, split into two daily doses, for a duration of 6–8 weeks. While mildly suppressive, users may benefit from a short PCT to restore natural hormone production.

Ideal for individuals looking to achieve a dry, lean, and muscular look, S4 (Andarine) offers a powerful non-steroidal option for cutting and athletic performance with manageable side effects and no estrogenic complications.