Side-by-side comparison of mechanisms, dosing, interactions, and stacking potential.
| Oxandrolone (Anavar) | Testosterone Cypionate | |
|---|---|---|
| Category | Hormones | Hormones |
| Standard Dose | Research indicates 5-20 mg/day orally for therapeutic/recovery applications. Clinical burn protocols use 0.1 mg/kg twice daily. | Research indicates 100-200 mg administered via intramuscular or subcutaneous injection every 7-14 days for testosterone replacement therapy. |
| Timing | Split into 2 doses (morning and evening) due to 9-hour half-life. Take with food to reduce GI discomfort. | Inject on a consistent schedule. Twice-weekly dosing (e.g., Monday/Thursday) reduces peak-trough fluctuations. Morning injection preferred for alignment with circadian testosterone rhythm. |
| Cycle Duration | Typical therapeutic cycles: 6-12 weeks. Clinical burn protocols have extended to 1 year+ with liver monitoring. Limit cycle length to minimize hepatic stress. | Ongoing for TRT. If discontinuing, taper and implement PCT protocol. Testicular function suppression occurs within 2-4 weeks of initiation. |
| Evidence Level | strong_human | strong_human |
Oxandrolone is a synthetic 17-alpha-alkylated dihydrotestosterone (DHT) derivative with a modified A-ring (replacement of C2 with an oxygen atom) that confers high anabolic-to-androgenic ratio (~10:1). It enhances protein synthesis by activating the androgen receptor while strongly binding sex hormone-binding globulin (SHBG), increasing free testosterone fraction. Oxandrolone directly stimulates phosphocreatine synthesis in skeletal muscle and has demonstrated anti-catabolic effects through cortisol receptor antagonism. In burn patients, it reverses catabolism by restoring the IGF-1/IGFBP-3 axis.
Research indicates 5-20 mg/day orally for therapeutic/recovery applications. Clinical burn protocols use 0.1 mg/kg twice daily.
Split into 2 doses (morning and evening) due to 9-hour half-life. Take with food to reduce GI discomfort.
Typical therapeutic cycles: 6-12 weeks. Clinical burn protocols have extended to 1 year+ with liver monitoring. Limit cycle length to minimize hepatic stress.
Testosterone cypionate is an esterified prodrug of testosterone that undergoes hydrolysis in vivo to release free testosterone. It binds the androgen receptor (AR), activating genomic pathways via AR nuclear translocation and transcription of anabolic genes including IGF-1, satellite cell proliferation, and nitrogen retention. Additionally, testosterone exerts non-genomic effects through membrane-associated AR signaling, modulating calcium influx and MAPK/ERK pathways. Aromatization to estradiol via CYP19A1 (aromatase) maintains bone density and lipid profiles.
Research indicates 100-200 mg administered via intramuscular or subcutaneous injection every 7-14 days for testosterone replacement therapy.
Inject on a consistent schedule. Twice-weekly dosing (e.g., Monday/Thursday) reduces peak-trough fluctuations. Morning injection preferred for alignment with circadian testosterone rhythm.
Ongoing for TRT. If discontinuing, taper and implement PCT protocol. Testicular function suppression occurs within 2-4 weeks of initiation.
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