Drostanolone Propionate (Drostanolone Propionate (Masteron))
A DHT-derived anabolic steroid (Masteron), historically used against breast cancer and popular in cutting phases for its hardening, anti-estrogenic effect on lean physiques. Educational reference only.
How it works
Drostanolone is derived from dihydrotestosterone (DHT), giving it strong androgenic and modest anabolic activity. It cannot aromatize and has mild anti-estrogenic action, contributing to a "dry, hard" look on lean individuals.
Key facts
- Molecular weight: 360.5 Da
- Half-life: ~2-3 days (propionate)
- Bioavailability: Intramuscular injection
- Storage: Room temperature; protect from light.
Dosing overview
- Typical dose: Used in cutting phases (non-medical)
- Frequency: Every 2-3 days
- Duration: Cycled
- Route: Intramuscular injection
Protocol notes
- The propionate ester requires injections every 2-3 days (an enanthate version exists for less frequent dosing).
- Most visible effect appears on already-lean physiques.
- Provides mild anti-estrogenic effects.
Reported benefits
- Muscle hardening on lean physiques
- Mild anti-estrogenic effect
- No aromatization
- Preserves lean mass in a deficit
Possible side effects
- Androgenic hair loss
- Prostate effects
- Testosterone suppression
- Adverse lipids
- Acne
Research
- Drostanolone in breast cancer (2013): Historically used as an anti-estrogenic agent in hormone-responsive breast cancer before modern therapies.
Compare Drostanolone Propionate
Research and educational reference only. Not medical advice.