Andarine (S4)


DOSAGE: 25mg/Pill

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What is Andarine?

Andarine (S4) was initially developed by GTX Inc. for addressing conditions like muscle wasting, osteoporosis, and BPH (prostate enlargement). Classified as a SARM (selective androgen receptor modulator), Andarine is currently prevalent as a research chemical. Athletes often use it to harness strength benefits and lean muscle gains without the adverse effects linked to anabolic steroids. Moreover, it finds application in steroid stacks to enhance a cycle without introducing additional side effects or aromatization.

Medical Studies

Numerous studies have explored Andarine’s effects. Notably, research demonstrated that a modest daily S4 dosage restored skeletal muscle. Comparative studies with dihydrotestosterone (DHT) revealed superior increases in bone mass and strength with Andarine. It exhibited greater effectiveness in fat loss and lean muscle mass development compared to anabolic steroids, doing so in a shorter time frame with fewer side effects.

Athletic Uses

By binding to androgen receptors, Andarine elevates strength and fosters lean muscle mass without causing water retention, joint dryness, liver strain, or significant suppression. Strong evidence suggests its role in preventing osteoporosis, contributing to bone and soft tissue strengthening. Andarine serves as a bridge between steroid cycles, minimizing muscle wasting and maintaining muscle mass gains.

How it Works

Operating by binding to androgen receptors, Andarine induces anabolic activity, promoting increased protein synthesis for muscle development. Unlike anabolic steroids, SARMS like Andarine avoid aromatization, liver strain, severe HPTA suppression, and general side effects.


While Andarine can be used independently, its efficacy is enhanced when stacked with other compounds. Stacking options include combining it with cardarine for endurance, creating a cutting stack with cardarine, or incorporating it into an anabolic steroid cycle for strength and lean muscle gains. It also synergizes well in a SARMs triple stack with cardarine and ostarine for recomposition purposes.


Andarine is effective for preventing muscle wasting, making it suitable for use between cycles with minimal suppressive effects.

Side Effects

Andarine does not aromatize, is non-suppressive when used correctly, and poses no harm to the liver. Its notable side effect involves a temporary affinity to androgen receptors in the eyes, causing vision adjustments from darkness to light or a temporary yellow tint. This effect is reversible upon discontinuation, and adjustments in dosage can alleviate concerns.


With a half-life of 4-6 hours, split dosages are advisable to maintain optimal levels.

Dosage and Use

The typical daily dosage ranges from 50-75 mg, administered in split doses in the morning and evening. Liquid formulations should be carefully ingested, and chase with juice or water, avoiding mixing in a cup to ensure proper consumption.

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