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Alarelin

Name: Alarelin
Brand: Peptalon
SKU: PE-0089-01-5
Availability: InStock
Rating: 4.8 (127 reviews)

Alarelin is a synthetic GnRH agonist peptide that stimulates the release of LH and FSH, influencing reproductive hormone balance

From AED 240.00

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Key Ingredients

Alarelin Acetate

Hormone Regulation

Balances Hormone Pathways

Regeneration Support

Support fertility

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Main Information

Alarelin is a synthetic gonadotropin-releasing hormone (GnRH) agonist designed to mimic the natural release of GnRH from the hypothalamus. It activates GnRH receptors in the anterior pituitary, triggering the release of luteinizing hormone (LH) and follicle-stimulating hormone (FSH) — the key hormones responsible for testosterone, estrogen, and reproductive function.

Unlike longer-acting suppressive analogs like Triptorelin, Alarelin produces a short, controlled pulse of hormone release, making it useful for:

Cycle triggering or synchronization
Fertility research protocols
HPTA stimulation in experimental models
Ovulation induction in animal studies

It’s less commonly used in performance enhancement, but may have niche applications in HPTA testing, fertility prep, or hormonal rhythm restoration without full suppression.

Scientific Background

Alarelin is a synthetic version of a natural hormone called GnRH (gonadotropin-releasing hormone). This hormone normally comes from the brain and plays a central role in controlling fertility and hormone levels by telling the pituitary gland to release LH (luteinizing hormone) and FSH (follicle-stimulating hormone). These two, in turn, regulate testosterone, estrogen, and the entire reproductive system. Alarelin was originally developed for reproductive management in animals, but it’s also widely used in research on fertility support, hormone cycle regulation, and temporary hormone suppression.

What the Science Says — Explained Simply

Boosting Fertility Hormones-Researchers in Japan tested how Alarelin affects hormone release in rat pituitary cells. The results showed that Alarelin caused a strong increase in LH and FSH levels, just like natural GnRH would.This means Alarelin can effectively stimulate the body’s fertility hormones.

Timing Ovulation-In another study, scientists gave Alarelin to female sheep to control ovulation and synchronize estrus (the equivalent of the menstrual cycle). The treatment worked well, helping to precisely time ovulation. This supports the use of Alarelin to regulate reproductive cycles — in animals and potentially in assisted fertility applications.

Suppressing Hormones (on Purpose) -A landmark review from Harvard researchers explained that when GnRH-like compounds (like Alarelin) are given continuously, they first stimulate hormones, but soon turn off the receptor system. This causes temporary suppression of LH, FSH, and sex hormones like testosterone and estrogen.This effect is useful in treating hormone-related conditions like endometriosis, PCOS, or hormone-sensitive cancers.

References

Yoshida H, Igarashi M, Tanaka T, Yamamoto M. Stimulation of gonadotropin release by alarelin in cultured anterior pituitary cells of rats. Endocrinol Jpn. 1990 Apr;37(2):209–216. doi:10.1507/endocrj1954.37.209.
Kusina NT, Tarwireyi F, Hamudikuwanda H, Agumba G, Mukwena J. Effect of GnRH analogues (buserelin and alarelin) on estrus synchronization and fertility in ewes. Anim Reprod Sci. 2001 Mar 1;67(3–4):229–236. doi:10.1016/S0378-4320(01)00125-4.
Conn PM, Crowley WF. N Engl J Med. 1991;324(2):93–103. PMID: 1984194

Usage Instructions

Alarelin is administered via subcutaneous injection using an insulin syringe. Its short half-life supports controlled timing protocols.

Reconstitute vial with 1–2 ml bacteriostatic water
Swirl gently until dissolved
Inject subcutaneously into the abdominal region or upper thigh
Store reconstituted solution refrigerated (2–8 °C), use within 7–10 days

Dosage Information

Fertility / Cycle Stimulation Protocols (Research Use):

Dose: 100–200 mcg per injection
Frequency: once daily or as per reproductive timing protocol
Duration: Short pulses of 3–7 days, depending on goal

HPTA Support / Diagnostic Use:

Dose: 100 mcg SC
Can be used to trigger transient LH/FSH spike
May pair with Clomid or Kisspeptin for axis monitoring

Important Warnings

For research use only – not approved for clinical or human fertility therapy

Store unmixed vial at 2–8 °C
Use reconstituted solution within 7–10 days
Do not use in combination with long-acting GnRH suppressive agents
Mild side effects may include headache, flushing, or temporary hormone fluctuations
Overuse may lead to pituitary fatigue or receptor downregulation

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What the Science Says — Explained Simply

Boosting Fertility Hormones-Researchers in Japan tested how Alarelin affects hormone release in rat pituitary cells. The results showed that Alarelin caused a strong increase in LH and FSH levels, just like natural GnRH would.This means Alarelin can effectively stimulate the body’s fertility hormones.

Timing Ovulation-In another study, scientists gave Alarelin to female sheep to control ovulation and synchronize estrus (the equivalent of the menstrual cycle). The treatment worked well, helping to precisely time ovulation. This supports the use of Alarelin to regulate reproductive cycles — in animals and potentially in assisted fertility applications.

Suppressing Hormones (on Purpose) -A landmark review from Harvard researchers explained that when GnRH-like compounds (like Alarelin) are given continuously, they first stimulate hormones, but soon turn off the receptor system. This causes temporary suppression of LH, FSH, and sex hormones like testosterone and estrogen.This effect is useful in treating hormone-related conditions like endometriosis, PCOS, or hormone-sensitive cancers.

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Alarelin