Roxadustat vs Epoetin Alfa
Head-to-head comparison of Roxadustat (Roxadustat (FG-4592), hypoxia-inducible factor prolyl hydroxylase inhibitor) and Epoetin Alfa (Recombinant human erythropoietin alfa) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | Roxadustat | Epoetin Alfa |
|---|---|---|
| Category | Muscle & Performance | Muscle & Performance |
| Full Name | Roxadustat (FG-4592), hypoxia-inducible factor prolyl hydroxylase inhibitor | Recombinant human erythropoietin alfa |
| Molecular Weight | 352.35 Da | ≈30,400 Da |
| Half-Life | ~12-16 h | ~4-13 h IV; ~20-30 h SC |
| Amino Acids | N/A | 165 |
| Typical Dose | 70-100 mg orally three times weekly | 50-100 IU/kg SC 3x weekly or 40,000 IU SC weekly |
| Route | Oral | Subcutaneous/IV |
| Purity | ≥98% | ≥98% |
| Studies Count | 180 | 320 |
| Research Status | Clinical | Clinical |
Roxadustat Benefits
- ✓induces endogenous EPO
- ✓improves iron handling
- ✓raises hemoglobin
- ✓may improve exercise tolerance
Epoetin Alfa Benefits
- ✓raises hemoglobin
- ✓increases oxygen-carrying capacity
- ✓may increase VO2 max
- ✓improves time-to-exhaustion
Roxadustat Dosing
70-100 mg orally 3x weekly|Titrate by hemoglobin response|Monitor iron indices regularly
Epoetin Alfa Dosing
50-100 IU/kg subcutaneous 3x weekly|40,000 IU subcutaneous weekly|Titrate to hemoglobin target under medical supervision
Roxadustat Side Effects
- ⚠nausea
- ⚠hypertension
- ⚠thrombotic events
Epoetin Alfa Side Effects
- ⚠hypertension
- ⚠thrombosis
- ⚠polycythemia
Research Overview
Roxadustat
Large clinical studies support roxadustat for anemia, especially in chronic kidney disease populations. Direct VO2 max enhancement data in healthy athletes are limited, so its performance effects remain mostly inferential.
Epoetin Alfa
Human studies in anemia and performance-related settings show that increasing red-cell mass can improve aerobic capacity and endurance. It remains heavily regulated because excessive erythropoiesis raises thrombotic and cardiovascular risk.
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