Lutropin alfa vs Cetrorelix
Head-to-head comparison of Lutropin alfa (Recombinant Human Luteinizing Hormone Alfa) and Cetrorelix (Cetrorelix acetate) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | Lutropin alfa | Cetrorelix |
|---|---|---|
| Category | Sexual Health | Sexual Health |
| Full Name | Recombinant Human Luteinizing Hormone Alfa | Cetrorelix acetate |
| Molecular Weight | 30,000 Da | 1431.06 Da |
| Half-Life | ~10-12 hours | ~30 hours |
| Amino Acids | N/A | 10 |
| Typical Dose | 75-150 IU per dose | 0.25 mg SC daily |
| Route | Subcutaneous/Intramuscular | Subcutaneous |
| Purity | ≥98% | ≥98% |
| Studies Count | 420 | 300 |
| Research Status | Clinical | Clinical |
Lutropin alfa Benefits
- ✓stimulates Leydig cells
- ✓raises endogenous testosterone
- ✓supports testicular steroidogenesis
- ✓pairs with FSH for fertility
Cetrorelix Benefits
- ✓prevents premature ovulation
- ✓supports IVF cycle control
- ✓blocks LH surge
- ✓short-acting pituitary suppression
Lutropin alfa Dosing
75-150 IU SC/IM 2-3x weekly|adjust to testosterone response|combine with FSH when spermatogenesis support is needed
Cetrorelix Dosing
0.25 mg SC daily|start on stimulation day 5-6|protocol-dependent antagonist cycle
Lutropin alfa Side Effects
- ⚠injection-site reactions
- ⚠headache
- ⚠hormonal swings
Cetrorelix Side Effects
- ⚠injection-site reactions
- ⚠headache
- ⚠nausea
Research Overview
Lutropin alfa
Lutropin alfa has been evaluated in fertility protocols to restore LH signaling and endogenous testosterone production. It is a direct research/clinical analogue for men with low gonadotropin drive.
Cetrorelix
Cetrorelix is a cornerstone GnRH antagonist in assisted reproduction, with a fast onset and reversible suppression of LH. Trials show it improves cycle management by reducing premature ovulation during stimulation.
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