Drostanolone Propionate (Masteron)
Short-ester Masteron — DHT-derived, valued for a dry/hard look in lean users.
- Half-life
- 20 h
- Out of system
- ~4 days
- Route
- Intramuscular
- Level
- Advanced
Daily dosing holds steady levels. After the last dose, roughly 97% has cleared in ~4 days (five half-lives) — the window that matters for washouts, bloodwork and surgery.
What Drostanolone Propionate (Masteron) is used for
- Adds hardness/definition to an already-lean physique
- Mild anti-estrogenic effect; no aromatization
- Often used in cutting / contest-prep contexts
How it's typically used
Literature range: ~100 mg intramuscular every other day (propionate ester).
What to watch for
- DHT-derived — accelerates hair loss and prostate effects in susceptible users
- Little benefit unless already lean; not a mass builder
- Controlled substance; run with testosterone, monitor lipids
Common questions
- What is the half-life of Drostanolone Propionate (Masteron)?
- Drostanolone Propionate (Masteron) has an approximate elimination half-life of 20 h. Daily dosing holds steady levels.
- How long does Drostanolone Propionate (Masteron) stay in your system?
- Roughly 97% of a dose has cleared after five half-lives — about ~4 days for Drostanolone Propionate (Masteron). That is the window that matters for washouts, bloodwork and surgery.
- How is Drostanolone Propionate (Masteron) taken?
- Drostanolone Propionate (Masteron) is typically administered by the intramuscular route. Literature range: ~100 mg intramuscular every other day (propionate ester).
- What are the risks of Drostanolone Propionate (Masteron)?
- DHT-derived — accelerates hair loss and prostate effects in susceptible users Little benefit unless already lean; not a mass builder Controlled substance; run with testosterone, monitor lipids
About Androgens & steroids
- What they are
- Anabolic-androgenic steroids — testosterone and its derivatives. These are drugs, not peptides, and are controlled substances in most countries.
- How they're run
- Injected intramuscularly or subcutaneously on a schedule set by the ester's half-life; a few are oral and hepatotoxic.
- What to watch
- Every one of these shuts down your own testosterone production. Full bloodwork before, during, and after is not optional, and an exit plan — PCT or ongoing replacement — is part of the decision to start, not an afterthought.
Full guide
Drostanolone Propionate (Masteron): A Tracking Guide for the Short Ester
A DHT-derived anabolic associated with cutting and "hardening." What that means, what it does not do, and what to monitor.
Other androgens & steroids
Peptid AI is an educational and self-tracking tool — not a medical service, and not a vendor. Nothing here is medical advice, a prescription, or an endorsement. Doses reflect what is commonly reported in research literature; they are not recommendations. Many compounds listed are experimental, not approved for human use, and/or controlled substances that are illegal to possess without a prescription in many countries. Always consult a qualified physician before starting, changing, or stopping any protocol.