Mesterolone vs Testosterone Propionate
A side-by-side research comparison of Mesterolone and Testosterone Propionate across mechanism, dosing, half-life, benefits, side effects and research status.
Comparison table
| Attribute | Mesterolone | Testosterone Propionate |
|---|---|---|
| Full name | Mesterolone (Proviron) | Testosterone Propionate (Short-Ester Testosterone) |
| Category | Anabolic Steroids | Anabolic Steroids |
| Status | Prescription drug (controlled substance) | Prescription drug (controlled substance) |
| Mechanism | Mesterolone is a DHT derivative that is orally active without 17aa alkylation (so low liver stress). It binds SHBG strongly, freeing up other androgens, and has anti-estrogenic effects, but weak muscle-building activity on its own. | Testosterone bound to a small propionate ester, giving rapid release and a short half-life. It acts on androgen receptors identically to other testosterone forms but with faster onset and offset of blood levels. |
| Molecular weight | 304.5 Da | 344.5 Da |
| Half-life | ~12 hours | ~0.8-2 days |
| Bioavailability | Oral | Intramuscular/subcutaneous injection |
| Typical dose | Medical: ~25-75 mg/day | Variable; frequent dosing required |
| Frequency | Daily (1-3 doses) | Every 1-2 days |
| Route | Oral tablet | Intramuscular or subcutaneous injection |
Mesterolone reported benefits
- Lowers SHBG (more free androgen)
- Anti-estrogenic effect
- Muscle hardness
- Low liver stress
- Supports libido
Testosterone Propionate reported benefits
- Rapid onset of testosterone levels
- Fast clearance (flexible timing)
- Muscle mass and strength
- Less water retention than long esters (perceived)
Related comparisons
Research and educational reference only. Not medical advice.