Home›Research›Compare›FSH vs Relaxin
Peptide ComparisonFSH vs Relaxin
Both are Reproductive & Hormonal peptides.
FSH
Follicle-Stimulating Hormone
No providers listed yet
Relaxin
Relaxin-2
Half-life: ~7–8 h (terminal, serelaxin/rh-relaxin-2)
No providers listed yet
FSH is FDA-approved, while Relaxin is investigational — the clearest structural difference between them.
FSH
Half-life
—
Relaxin
Half-life
~7–8 h (terminal, serelaxin/rh-relaxin-2)
| Your goal | Better option |
|---|---|
| Stronger clinical evidence | FSH |
| Further along in FDA review | FSH |
Research summary only — not medical advice. Consult a qualified provider before making any decisions.
FSH
Relaxin
FSH
The improvement of umbilical cord mesenchymal stem cells on the ovarian microenvironment: a systematic review…
Recombinant versus urinary gonadotrophin for ovarian stimulation in assisted reproductive technology cycles
Efficacy and safety of hMG versus recombinant FSH: a meta-analysis
Revisiting ESR in PCOS: an easily obtainable link to immune and metabolic dysregulation.
+5 more
Relaxin
Development of a long-acting relaxin for the treatment of pulmonary hypertension.
Serelaxin, recombinant human relaxin-2, for treatment of acute heart failure (RELAX-AHF): a randomised, place…
Association of Relaxin-1 Levels with Mortality in Sepsis and Septic Shock.
Serelaxin has greater anti-fibrotic potential than perindopril but maintains its anti-fibrotic efficacy in th…
+1 more
About FSH
Binds FSH receptors on Sertoli cells in testes to support sperm maturation and inhibin B production. In women, binds granulosa cell FSH receptors to drive follicular growth and estradiol production.
About Relaxin
Binds RXFP1 receptor, activating adenylyl cyclase and cAMP/PKA pathway. Upregulates matrix metalloproteinases (MMPs) to degrade excess collagen. Inhibits TGF-β fibrotic signaling. Promotes cervical softening and pelvic ligament compliance.
Information below reflects published research data only — not medical advice. Consult a qualified provider before use.
FSH
Under clinical review
Being verified by our medical team before we display contraindications for this peptide.
Under clinical review
Being verified by our medical team before we display monitoring guidance for this peptide.
Relaxin
No established clinical contraindications. This is an investigational compound with limited human data and has not been evaluated by the FDA for safety in this context. Consult a qualified clinician.
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