Fluoxymesterone vs Nandrolone Decanoate
A side-by-side research comparison of Fluoxymesterone and Nandrolone Decanoate across mechanism, dosing, half-life, benefits, side effects and research status.
Comparison table
| Attribute | Fluoxymesterone | Nandrolone Decanoate |
|---|---|---|
| Full name | Fluoxymesterone (Halotestin) | Nandrolone Decanoate (Deca-Durabolin) |
| 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. | Nandrolone is testosterone lacking the 19-carbon methyl group, giving it high anabolic and lower androgenic activity. It binds androgen receptors and, unlike testosterone, converts to a weaker androgen (rather than DHT) in some tissues, reducing certain androgenic effects but not estrogen-related ones. |
| Molecular weight | 336.4 Da | 428.6 Da |
| Half-life | ~9 hours | ~6-12 days |
| Bioavailability | Oral | Intramuscular injection |
| Typical dose | Medical: ~2.5-20 mg/day | Medical: ~50-100 mg every 1-4 weeks |
| Frequency | Daily | Weekly to monthly (medical) |
| Route | Oral tablet | Intramuscular injection |
Fluoxymesterone reported benefits
- Rapid strength gains
- Increased aggression/drive
- Red blood cell stimulation
- No added water weight
Nandrolone Decanoate reported benefits
- Lean muscle mass gains
- Reputed joint comfort
- Increased red blood cell production
- Treats certain anemias/wasting (medical)
- Improved nitrogen retention
Related comparisons
Research and educational reference only. Not medical advice.