Fluoxymesterone vs Testosterone Propionate
A side-by-side research comparison of Fluoxymesterone and Testosterone Propionate across mechanism, dosing, half-life, benefits, side effects and research status.
Comparison table
| Attribute | Fluoxymesterone | Testosterone Propionate |
|---|---|---|
| Full name | Fluoxymesterone (Halotestin) | Testosterone Propionate (Short-Ester Testosterone) |
| Category | Anabolic Steroids | Anabolic Steroids |
| Status | FDA-approved drug (controlled substance) | Prescription drug (controlled substance) |
| Mechanism | A 17-alpha-alkylated, fluorinated derivative of methyltestosterone with extremely high androgenic potency. It boosts strength, aggression, and red blood cells rapidly but does little for muscle size. | 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 | 336.4 Da | 344.5 Da |
| Half-life | ~9 hours | ~0.8-2 days |
| Bioavailability | Oral | Intramuscular/subcutaneous injection |
| Typical dose | Medical: ~2.5-20 mg/day | Variable; frequent dosing required |
| Frequency | Daily | Every 1-2 days |
| Route | Oral tablet | Intramuscular or subcutaneous injection |
Fluoxymesterone reported benefits
- Rapid strength gains
- Increased aggression/drive
- Red blood cell stimulation
- No added water weight
Testosterone Propionate reported benefits
- Rapid onset of testosterone levels
- Fast clearance (flexible timing)
- Muscle mass and strength
- Less water retention than long esters (perceived)
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Research and educational reference only. Not medical advice.