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Harm-reduction information only — not medical advice. In crisis or experiencing adverse effects, contact a healthcare professional or your local emergency services immediately.

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SARMs

S-23

S23

Suppressive SARM explored for male contraception; short half-life.

🚧 Expanded guide coming soon. This compound has PK data and a source — a full overview, mechanism, and dosing guide is pending editorial review.

Pharmacokinetic summary

Model tier
Simple (t½ + F, Tmax estimated)
Half-life
0.2 days
Bioavailability
100%
Typical dose
5–30 mg

Harm reduction

Aromatizes
No
Hepatotoxicity
mild
Injection frequency
Oral, 2×/day

⚠ Highly suppressive; investigated as a male contraceptive.

Related compounds

Ostarine (MK-2866 / Enobosarm)

Non-steroidal SARM; mild, used in cutting/recomp. Simple model (estimated).

Ligandrol (LGD-4033)

Potent SARM for lean mass; suppression evident at higher doses.

Andarine (S4)

SARM with notable vision-related side effects; short half-life requiring divided dosing.

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