Alarelin Acetate
Also known as: Alarelin Acetate, Alarelin
Alarelin acetate is a synthetic gonadotropin-releasing hormone (GnRH) agonist analog used in research and veterinary/reproductive contexts to modulate the hypothalamic-pituitary-gonadal axis.
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Mechanism of Action
Alarelin is a decapeptide GnRH agonist that binds pituitary GnRH receptors on gonadotrope cells, initially stimulating release of luteinizing hormone (LH) and follicle-stimulating hormone (FSH). With continuous or repeated exposure it causes receptor downregulation and desensitization of the gonadotropes, ultimately suppressing LH/FSH secretion and downstream sex-steroid production. This biphasic flare-then-suppression action underlies its use in regulating reproductive cycles and in hormone-dependent research applications.
- Half-life
- Short for the native peptide; on the order of a few hours
- Administration Routes
- subcutaneous, intramuscular
- Research Status
- Clinical
Reported Benefits
- Stimulates an initial LH and FSH surge (flare effect)
- Produces downstream suppression of sex steroids with continued use
- Used in reproductive cycle regulation and ovulation induction research
- Useful probe for hypothalamic-pituitary-gonadal axis studies
- Applied in veterinary reproductive protocols
Potential Side Effects
- Hot flashes and vasomotor symptoms
- Headache
- Injection-site reactions
- Transient symptom flare from initial hormone surge
- Reduced libido with prolonged suppression
Common Dosing
Research and reproductive protocols have used microgram-range parenteral doses (often around 15-25 mcg) per administration; provided for research reference only and not personal medical advice.
The dosing information above is aggregated from research literature and anecdotal community reports for educational purposes only. It is not a recommendation, prescription, or medical advice. Peptides are sold as research chemicals only and are not intended for human use.
Contraindications
- Pregnancy and breastfeeding
- Hormone-sensitive conditions without supervision
- Known hypersensitivity to GnRH analogs
- Undiagnosed abnormal genital bleeding
Gonadorelin (GnRH)
Gonadorelin is a synthetic form of gonadotropin-releasing hormone (GnRH) studied for stimulating the pituitary release of LH and FSH. It is used in fertility research and to assess or support the hypothalamic-pituitary-gonadal axis.
Triptorelin (GnRH)
Triptorelin is a long-acting synthetic GnRH agonist used clinically to suppress sex-hormone production after an initial flare. It is applied in prostate cancer, endometriosis, precocious puberty, and fertility protocols.
HCG (Human Chorionic Gonadotropin)
A glycoprotein hormone produced in pregnancy that mimics luteinizing hormone, used clinically to stimulate gonadal function. It is studied to support testosterone production and fertility.
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[Comparison of Alarelin and Triptorelin in the long-protocol ovulation induction in in vitro fertilization and embryo transfer]
2010
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Liquid chromatography tandem mass spectrometry with triple stage fragmentation for highly selective analysis and pharmacokinetics of alarelin in rat plasma
2019
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Pharmacogenomic analysis of alarelin acetate-induced hepatotoxicity: a case report and literature review
2025