SARM / Classic SARM

S-23

Most suppressive SARM — studied as male contraceptive in animals (complete spermatogenesis suppression). Strong muscle-building and hardening. Full PCT essential — treat recovery as equivalent to moderate AAS cycle.

Build protocol outline Open dose calculator TNHL ebooks

Educational reference only. This page does not diagnose, prescribe, or replace care from a licensed professional. Laws, availability, and clinical appropriateness vary by location.

Reference dose10–30 mg/day. Maximum 8 weeks.

Half-life12 hours

Risk flaghigh

Regulatory noteResearch-only flag

Side effects and watch-outs

⚠️ MOST SUPPRESSIVE SARM — testosterone can be fully shut down
Testicular atrophy
Infertility (temporary — studied as male contraceptive)
Aggressive mood changes
Hair loss
Acne
HDL suppression
Requires full anabolic-level PCT (HCG + Nolvadex/Clomid)