Follitropin alfa vs Kisspeptin-52
Head-to-head comparison of Follitropin alfa (Recombinant Human Follicle-Stimulating Hormone Alfa) and Kisspeptin-52 (Kisspeptin-52 (KISS1-derived peptide fragment)) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | Follitropin alfa | Kisspeptin-52 |
|---|---|---|
| Category | Sexual Health | Sexual Health |
| Full Name | Recombinant Human Follicle-Stimulating Hormone Alfa | Kisspeptin-52 (KISS1-derived peptide fragment) |
| Molecular Weight | 30,000 Da | ≈5,800 Da |
| Half-Life | ~24 hours | Minutes to ~1 hour |
| Amino Acids | N/A | 52 |
| Typical Dose | 75-150 IU per dose | 0.1-3.0 nmol/kg |
| Route | Subcutaneous/Intramuscular | Intravenous/Subcutaneous |
| Purity | ≥98% | ≥98% |
| Studies Count | 850 | 120 |
| Research Status | Clinical | Clinical research |
Follitropin alfa Benefits
- ✓supports spermatogenesis
- ✓improves Sertoli cell signaling
- ✓may enhance sperm parameters
- ✓complements LH-driven testosterone support
Kisspeptin-52 Benefits
- ✓stimulates GnRH signaling
- ✓supports LH/FSH release
- ✓aids ovulation research
- ✓maps reproductive-axis function
Follitropin alfa Dosing
75-150 IU SC/IM 2-3x weekly|adjust based on FSH and semen analysis|often combined with hCG in men
Kisspeptin-52 Dosing
0.1-3.0 nmol/kg IV bolus|0.1-1.0 nmol/kg SC|protocol-dependent infusion
Follitropin alfa Side Effects
- ⚠injection-site reactions
- ⚠headache
- ⚠bloating
Kisspeptin-52 Side Effects
- ⚠flushing
- ⚠nausea
- ⚠headache
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.
Kisspeptin-52
Human and animal studies show kisspeptin-52 can acutely increase gonadotropin secretion and activate the hypothalamic-pituitary-gonadal axis. It has been explored in fertility research and assisted-reproduction settings as a way to trigger endogenous reproductive hormone release.
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