Description
Overview
High-affinity non-steroidal androgen-receptor agonist; studied as a potential male contraceptive due to strong suppression.
Composition / Profile
- Active compound: S-23
- Drug class: Selective androgen receptor modulator (SARM)
- Pack / dose (this listing): 60tab / 10mg
Format
- Oral capsule/tablet or liquid
- Pack / dose: 60tab / 10mg
Dosage & Usage Patterns
- Bodybuilding (commonly cited): Commonly cited: ~10–20 mg/day; strong suppression — often compared to a mild oral steroid.
- Clinical / general reference: No established human dose; research compound.
- Half-life: Reported short-to-moderate; data limited.
- Protocols vary by individual, compound stack, and bloodwork — figures above reflect community-reported patterns, not medical recommendations.
Effects
Reported benefits (commonly cited)
- Significant muscle mass and strength gains.
- Strong HPTA suppression (studied as contraceptive).
Reported side effects
- Very strong testosterone suppression.
- Aggression.
- Testicular shrinkage.
- Potential fertility effects.
Key Interactions
- Strongly suppresses endogenous testosterone.
Suppression / Recovery Considerations
- Profound HPTA suppression (its contraceptive research reflects this).
Precautions
- Minimal human safety data.
- One of the more suppressive SARMs.
Common Misconception
Myth: ‘SARMs are non-suppressive alternatives to steroids.’
Evidence: S-23 was literally studied as a contraceptive for its suppression.
Related Categories
- Browse more in SARMs → S-23.
- Related: Post Cycle Therapy (PCT).
Storage
- Store in a cool, dry place away from direct light and moisture






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