Drostanolone Propionate vs Testosterone Undecanoate
A side-by-side research comparison of Drostanolone Propionate and Testosterone Undecanoate across mechanism, dosing, half-life, benefits, side effects and research status.
Comparison table
| Attribute | Drostanolone Propionate | Testosterone Undecanoate |
|---|---|---|
| Full name | Drostanolone Propionate (Masteron) | Testosterone Undecanoate (Ultra-Long Ester) |
| Category | Anabolic Steroids | Anabolic Steroids |
| Status | Prescription drug (controlled substance) | FDA-approved drug (controlled substance) |
| Mechanism | 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. | The large undecanoate ester dramatically slows release, giving weeks-long duration from a single injection. Oral undecanoate is absorbed via the lymphatic system, partly bypassing first-pass liver metabolism. |
| Molecular weight | 360.5 Da | 456.7 Da |
| Half-life | ~2-3 days (propionate) | ~20-34 days (injection depot) |
| Bioavailability | Intramuscular injection | Deep IM injection or oral (lymphatic absorption) |
| Typical dose | Used in cutting phases (non-medical) | Injection every ~10-14 weeks (medical); oral 2x daily with food |
| Frequency | Every 2-3 days | Infrequent (injection) or twice daily (oral) |
| Route | Intramuscular injection | Deep intramuscular injection or oral |
Drostanolone Propionate reported benefits
- Muscle hardening on lean physiques
- Mild anti-estrogenic effect
- No aromatization
- Preserves lean mass in a deficit
Testosterone Undecanoate reported benefits
- Very infrequent injections (convenience)
- Stable long-term testosterone (medical)
- Oral option avoids most liver toxicity
- Restores testosterone in deficiency
Related comparisons
Research and educational reference only. Not medical advice.