Follitropin alfa vs Leuprolide
Head-to-head comparison of Follitropin alfa (Recombinant Human Follicle-Stimulating Hormone Alfa) and Leuprolide (Leuprolide acetate) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | Follitropin alfa | Leuprolide |
|---|---|---|
| Category | Sexual Health | Sexual Health |
| Full Name | Recombinant Human Follicle-Stimulating Hormone Alfa | Leuprolide acetate |
| Molecular Weight | 30,000 Da | 1209.39 Da |
| Half-Life | ~24 hours | ~3 hours; depot lasts weeks |
| Amino Acids | N/A | 9 |
| Typical Dose | 75-150 IU per dose | 0.1 mg SC daily|3.75 mg IM monthly|11.25 mg depot per protocol |
| Route | Subcutaneous/Intramuscular | Subcutaneous/Intramuscular |
| Purity | ≥98% | ≥98% |
| Studies Count | 850 | 1200 |
| Research Status | Clinical | Clinical |
Follitropin alfa Benefits
- ✓supports spermatogenesis
- ✓improves Sertoli cell signaling
- ✓may enhance sperm parameters
- ✓complements LH-driven testosterone support
Leuprolide Benefits
- ✓pituitary suppression
- ✓cycle synchronization
- ✓ovarian stimulation timing
- ✓endometriosis-related reproductive care
Follitropin alfa Dosing
75-150 IU SC/IM 2-3x weekly|adjust based on FSH and semen analysis|often combined with hCG in men
Leuprolide Dosing
0.1 mg SC daily|3.75 mg IM monthly depot|11.25 mg 3-month depot
Follitropin alfa Side Effects
- ⚠injection-site reactions
- ⚠headache
- ⚠bloating
Leuprolide Side Effects
- ⚠hot flashes
- ⚠decreased libido
- ⚠injection-site reactions
Research Overview
Follitropin alfa
Clinical literature supports follitropin alfa for male infertility, especially when combined with LH activity to optimize testicular output. Its role is strongest in hypogonadotropic hypogonadism and assisted reproduction protocols.
Leuprolide
Leuprolide is one of the best-studied GnRH analogs in reproductive medicine and assisted reproduction. It produces an initial flare followed by receptor desensitization and reduced LH/FSH output.
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