Description
Overview
Partial androgen-receptor agonist with tissue selectivity for muscle/bone; investigational, never approved.
Composition / Profile
- Active compound: Andarine (S-4)
- Drug class: Selective androgen receptor modulator (SARM)
- Pack / dose (this listing): 60tab / 25mg
Format
- Oral capsule/tablet or liquid
- Pack / dose: 60tab / 25mg
Dosage & Usage Patterns
- Bodybuilding (commonly cited): Commonly cited: ~25–50 mg/day (split AM/PM due to short half-life); 8–12 week cycles reported.
- Clinical / general reference: No established human dose; research compound.
- Half-life: ~4 h.
- Protocols vary by individual, compound stack, and bloodwork — figures above reflect community-reported patterns, not medical recommendations.
Effects
Reported benefits (commonly cited)
- Lean mass gains.
- Fat loss.
- Strength improvement.
- Tissue-selective androgen activity (with characteristic vision side effect).
Reported side effects
- Distinctive yellow-tint vision/night-vision disturbance.
- Testosterone suppression.
- Mood changes.
Key Interactions
- Suppresses endogenous testosterone.
- Androgen-receptor activity.
Suppression / Recovery Considerations
- Suppresses the HPTA (SARMs are suppressive, contrary to marketing).
Precautions
- Unapproved, unregulated purity.
- The vision effect is characteristic.
Common Misconception
Myth: ‘SARMs don’t suppress and need no PCT.’
Evidence: SARMs suppress natural testosterone dose-dependently.
Related Categories
- Browse more in SARMs → Andarine (S-4).
- Related: Post Cycle Therapy (PCT).
Storage
- Store in a cool, dry place away from direct light and moisture






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