This page describes pharmacological agents that may have legal restrictions, side effects, and drug interactions in your jurisdiction. Information is for educational research only — consult a clinician before considering any compound.

High-risk compound

Surface here is educational only; do not use without medical supervision. Our editorial verdict is SKIP-PERMANENT — risk:benefit fails for the canonical archetype.

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Clostebol

4-chloro testosterone derivative.

Aliases (5)
4-chlorotestosterone · Steranabol · Macrobin · Trofodermin · clostebol acetate
TYPICAL DOSE
ROUTE
CYCLE
STORAGE

Overview

What is Clostebol?

4-chloro testosterone derivative. Mildly anabolic, no estrogen conversion. Famous as the source of Jannik Sinner's 2024 WADA failure via topical contamination. Hard-block for any tested combat athlete.

What to Expect

  • Week 1
    Tolerability and dose-response.
  • Week 2-4
    Early effect window.
  • Week 4-8
    Peak benefit assessment.
  • Week 8+
    Cycle decision point.
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