Mesterolone vs Testosterone Enanthate
A side-by-side research comparison of Mesterolone and Testosterone Enanthate across mechanism, dosing, half-life, benefits, side effects and research status.
Comparison table
| Attribute | Mesterolone | Testosterone Enanthate |
|---|---|---|
| Full name | Mesterolone (Proviron) | Testosterone Enanthate (Long-Ester Testosterone) |
| Category | Anabolic Steroids | Anabolic Steroids |
| Status | Prescription drug (controlled substance) | FDA-approved 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. | A testosterone molecule attached to an enanthate ester that slows release from the injection site. Once cleaved, testosterone binds androgen receptors to increase muscle protein synthesis, nitrogen retention, red blood cell production, and secondary sexual characteristics. |
| Molecular weight | 304.5 Da | 400.6 Da |
| Half-life | ~12 hours | ~4.5-5 days |
| Bioavailability | Oral | Intramuscular/subcutaneous injection |
| Typical dose | Medical: ~25-75 mg/day | TRT ~100-200 mg/week (medical) |
| Frequency | Daily (1-3 doses) | 1-2x weekly |
| 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 Enanthate reported benefits
- Restores testosterone in deficiency (medical)
- Increased muscle mass and strength
- Improved libido and mood (when deficient)
- Increased bone density
- Stable long-acting levels
Related comparisons
Research and educational reference only. Not medical advice.