Mesterolone vs Sustanon 250
A side-by-side research comparison of Mesterolone and Sustanon 250 across mechanism, dosing, half-life, benefits, side effects and research status.
Comparison table
| Attribute | Mesterolone | Sustanon 250 |
|---|---|---|
| Full name | Mesterolone (Proviron) | Sustanon 250 (Testosterone Ester Blend) |
| 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. | Combines short, medium, and long esters so testosterone is released at staggered rates, producing a rapid initial rise followed by sustained levels. The active hormone is standard testosterone acting on androgen receptors. |
| Molecular weight | 304.5 Da | Blend (varies by ester) |
| Half-life | ~12 hours | Mixed (~1 day to ~2 weeks across esters) |
| Bioavailability | Oral | Intramuscular injection |
| Typical dose | Medical: ~25-75 mg/day | Medical: ~250 mg every 2-3 weeks (varies) |
| Frequency | Daily (1-3 doses) | Every 1-3 weeks (medical) |
| Route | Oral tablet | Intramuscular injection |
Mesterolone reported benefits
- Lowers SHBG (more free androgen)
- Anti-estrogenic effect
- Muscle hardness
- Low liver stress
- Supports libido
Sustanon 250 reported benefits
- Fast onset plus long duration
- Single-product convenience
- Restores testosterone (medical)
- Muscle mass and strength
Related comparisons
Research and educational reference only. Not medical advice.