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Medical notice — For research and educational purposes only. Not medical advice. Consult a licensed physician before using any peptide or compound.

Kisspeptin

reproductivehormonal
Regulatory status — Research use only — not approved for human use

Kisspeptin is a neuropeptide encoded by the KISS1 gene that acts as a master regulator of the hypothalamic-pituitary-gonadal (HPG) axis by stimulating gonadotropin-releasing hormone (GnRH) pulsatility and luteinizing hormone (LH) release. Its roles in reproductive physiology, puberty onset, and pregnancy have been characterized primarily through animal and mechanistic studies, with limited human clinical trial data available. Kisspeptin is currently classified as a research compound and is prohibited in sport by WADA as a testosterone-stimulating substance.

Evidence coverage

26/32 claims verified by independent fact-checker.

Pepteligence regenerates entries quarterly and when new high-tier evidence appears.

Quick facts

Half-life
—
Typical dose
See research context
Route
subcutaneous
Frequency
—
Cycle length
—
Evidence strength
Animal models

Suggested labs for this peptide class — educational reference only; not medical advice.

TL;DR

  • Half-life: — — dosed —.
  • Administered via subcutaneous.
  • Evidence base: animal model studies.
  • Primary goals: reproductive, hormonal.
EVIDENCE HIERARCHYRCTsObservationalAnimal studiesAnecdotal

Primarily animal data

How we evaluate evidence →

How it works

GLP-1 receptor agonists reduce appetite via hypothalamic signalling and enhance insulin secretion.

Kisspeptin neurons located in the preoptic area are required for estradiol-induced LH surges and are essential for normal fertility in female mice [1]. These neurons form part of the KNDy (kisspeptin/neurokinin B/dynorphin) system in the arcuate nucleus, which functions as the central GnRH pulse generator [10]. Animal studies indicate that GABA receptor modulation — via both GABA-A and GABA-B receptors — affects arcuate kisspeptin neuron bursting and synchronization activity, influencing the rhythm of GnRH pulsatility [3]. Serotonergic signaling also intersects with this system: animal studies indicate that serotonin activates approximately 60% of arcuate nucleus kisspeptin neurons in diestrous female mice, further modulating GnRH pulse generator activity [2]. Growth hormone and IGF-1 have been shown in mechanistic and expert commentary sources to stimulate GnRH and kisspeptin neurons, supporting luteinizing hormone release and gonadal function [4]. Photoperiodic cues modulate puberty timing through a melatonin–kisspeptin–GnRH signaling cascade, as demonstrated in female rat models [11]. During pregnancy, animal studies propose that serum kisspeptin concentrations rise substantially, with the placenta suggested as a primary production source [12]. In the context of polycystic ovary syndrome, mechanistic studies indicate that kisspeptin exacerbates androgen-induced follicular dysplasia by promoting Drp1 phosphorylation imbalance and excessive mitochondrial fission in granulosa cells [7]. Beyond reproduction, animal studies suggest kisspeptin-10 may restore mitochondrial function in pulmonary artery smooth muscle cells and attenuate pulmonary arterial hypertension in mouse models [8], and that kisspeptin-54 may confer renal protection in diabetic nephropathy models by reducing endothelial permeability through ZEB1 inhibition [9]. Animal studies also suggest that kisspeptin-10 promotes hormone secretion, ovarian follicle development, and fecundity via PI3K/AKT/ERK signaling [13]. All mechanistic data above are derived from animal or in vitro sources; no human clinical trials of kisspeptin as a therapeutic intervention are available in this evidence base.

What the research says

Research summary content coming soon. Check the references section for indexed studies.

100%50%25%0%00h1t½0h2t½0h3t½0h4t½0h
Approximate plasma concentration over 4 half-lives (0h × 4 = 0h)

Protocol lifecycle

BeforeDuringAfter

Before — Pre-cycle readiness

Readiness checklist

Regulatory awareness
  • Confirm you are not subject to WADA anti-doping rules; kisspeptin is on the 2024 Prohibited List [5]
  • Understand kisspeptin is a research-only compound with no approved therapeutic indication
Medical screening
  • Rule out hyperandrogenic conditions such as PCOS; mechanistic evidence suggests kisspeptin may worsen follicular dysplasia in androgen excess states [7]
  • Obtain baseline reproductive hormone panel (LH, FSH, estradiol, testosterone) before any use
Evidence review
  • Acknowledge that all efficacy data are from animal or in vitro studies; no human RCTs of kisspeptin as a therapeutic intervention exist in this evidence base
  • Discuss risk-benefit profile with a qualified clinician given the absence of human safety data
  • Consult a clinician before use; no human clinical trial dosing guidance exists
  • Understand that kisspeptin is prohibited in competitive sport under WADA regulations [5]
  • Individuals with hyperandrogenic conditions (e.g., PCOS) should exercise particular caution given mechanistic evidence of follicular dysplasia exacerbation [7]

During — Active protocol

Protocol notice — The following describes common protocols reported in research and community sources. This is not medical advice. Dosing, frequency, and duration should be determined with a licensed physician familiar with peptide research.
  • Monitor for adverse effects; no established human safety profile exists
  • Be aware that this compound is under active anti-doping surveillance with validated detection methods in serum and urine [5]

After — Post-cycle

  • No post-cycle protocol data exist in this evidence base; consult a clinician for hormonal monitoring

Stacks it appears in

Kisspeptin is typically used as a standalone compound. Stack data coming soon.

Safety

Safety notice — Serious / theoretical risks:
  • Potential exacerbation of follicular dysplasia in androgen-excess states based on mechanistic animal data [7]

Contraindications

  • ·Competitive athletes subject to WADA anti-doping regulations (prohibited substance, 2024 Prohibited List) [5]
  • ·Mechanistic data suggest caution in hyperandrogenic conditions (e.g., PCOS) due to potential exacerbation of follicular dysplasia via mitochondrial fission pathways [7]

Community experiences

Community content — User-submitted experiences are self-reported and have not been verified. They do not constitute medical advice. Pepteligence aggregates community data under Section 230 protections.

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Kisspeptin — at a glance

PropertyKisspeptin—
Half-life——
Routesubcutaneous—
Typical doseSee research context—
MechanismKisspeptin neurons located in the preoptic area are required for estradiol-induced LH surges and are essential for normal fertility in female mice. These neurons form part of the KNDy (kisspeptin/neurokinin B/dynorphin) system in the arcuate nucleus, which functions as the central GnRH pulse generator. Animal studies indicate that GABA receptor modulation — via both GABA-A and GABA-B receptors — affects arcuate kisspeptin neuron bursting and synchronization activity, influencing the rhythm of GnRH pulsatility. Serotonergic signaling also intersects with this system: animal studies indicate that serotonin activates approximately 60% of arcuate nucleus kisspeptin neurons in diestrous female mice, further modulating GnRH pulse generator activity. Growth hormone and IGF-1 have been shown in mechanistic and expert commentary sources to stimulate GnRH and kisspeptin neurons, supporting luteinizing hormone release and gonadal function. Photoperiodic cues modulate puberty timing through a melatonin–kisspeptin–GnRH signaling cascade, as demonstrated in female rat models. During pregnancy, animal studies propose that serum kisspeptin concentrations rise substantially, with the placenta suggested as a primary production source. In the context of polycystic ovary syndrome, mechanistic studies indicate that kisspeptin exacerbates androgen-induced follicular dysplasia by promoting Drp1 phosphorylation imbalance and excessive mitochondrial fission in granulosa cells. Beyond reproduction, animal studies suggest kisspeptin-10 may restore mitochondrial function in pulmonary artery smooth muscle cells and attenuate pulmonary arterial hypertension in mouse models, and that kisspeptin-54 may confer renal protection in diabetic nephropathy models by reducing endothelial permeability through ZEB1 inhibition. Animal studies also suggest that kisspeptin-10 promotes hormone secretion, ovarian follicle development, and fecundity via PI3K/AKT/ERK signaling. All mechanistic data above are derived from animal or in vitro sources; no human clinical trials of kisspeptin as a therapeutic intervention are available in this evidence base.—
Evidence strengthanimalanecdotal
Primary goalreproductive—

Frequently asked questions

What is Kisspeptin?
Kisspeptin is a neuropeptide encoded by the KISS1 gene that acts as a master regulator of the hypothalamic-pituitary-gonadal (HPG) axis by stimulating gonadotropin-releasing hormone (GnRH) pulsatility and luteinizing hormone (LH) release. It plays critical roles in reproductive physiology and puberty onset. It is not FDA-approved and is classified as a research compound.
How does Kisspeptin work?
Kisspeptin neurons in the preoptic area are required for estradiol-induced LH surges and are essential for normal fertility. These neurons form part of the KNDy (kisspeptin/neurokinin B/dynorphin) system in the arcuate nucleus, which functions as the central GnRH pulse generator. By stimulating GnRH pulsatility, kisspeptin drives downstream LH and FSH release from the anterior pituitary.
What is Kisspeptin used for?
Animal studies have established kisspeptin as a central regulator of the HPG axis and reproductive physiology. Human research has explored its roles in puberty, reproductive endocrinology, and fertility. No controlled human clinical trials have established therapeutic applications requiring regulatory approval.
Is Kisspeptin FDA-approved?
No. Kisspeptin is not FDA-approved for any indication. It is classified as a research compound and regulatory status varies by country.
What are common dosages of Kisspeptin?
No approved or consensus clinical dosing has been established for kisspeptin. No validated dose or frequency from controlled human trials is documented in the current research literature.
How is Kisspeptin administered?
Based on the available research literature, kisspeptin has been studied via subcutaneous administration. No administration route has been validated for safety or efficacy in regulatory-approved clinical use.
What are common side effects of Kisspeptin?
No comprehensive side-effect profile from controlled human clinical trials has been established for kisspeptin. Its safety in humans has not been validated by regulatory-grade trial methodology.
Is Kisspeptin prohibited in competitive sport?
Yes. Kisspeptin is listed on the WADA 2024 Prohibited List. Athletes subject to anti-doping regulations should not use kisspeptin.
Are there safety concerns with Kisspeptin?
Mechanistic data suggest caution in hyperandrogenic conditions such as polycystic ovary syndrome (PCOS), based on potential exacerbation of follicular dysplasia via mitochondrial fission pathways. No formal human contraindication data from clinical trials are available.
Can Kisspeptin be combined with other compounds?
No evidence-supported combination protocols have been established for kisspeptin. The current source literature does not document any stacking combinations with human-validated data.
Is Kisspeptin legal?
Kisspeptin is not FDA-approved and is not a scheduled controlled substance in the United States. Its legal status for possession and importation varies by jurisdiction. Athletes should note it is WADA-prohibited. This is not legal advice.
What does the research on Kisspeptin show overall?
Kisspeptin's research base documents its central role in the HPG axis from animal studies, with human research characterizing its involvement in reproductive physiology and puberty. It occupies the observational/early-phase level in the evidence hierarchy — meaningful for reproductive endocrinology research but without regulatory-grade clinical trial data supporting therapeutic approval.

References

  1. [1]

    Kisspeptin made in the preoptic area is required for normal estradiol-induced LH surges and optimal fertility in females.

    Puffer Marina S, Yang Jason, Esparza Lourdes A et al.

    Endocrinology · 2026 · PMID 42057695

    View on PubMed →
  2. [2]

    Robust serotonin activation of the kisspeptin GnRH pulse generator in male and female mice.

    Morris Paul G, Liu Xinhuai, Birt Emily et al.

    Endocrinology · 2026 · PMID 41906629

    View on PubMed →
  3. [3]

    GABA receptor modulation of arcuate kisspeptin neuron bursting and synchronization activity in female mice.

    Eddleston Toby, Morris Paul G, Herbison Allan E

    Journal of neuroendocrinology · 2026 · PMID 41912143

    View on PubMed →
  4. [4]

    GH and GnRH-gonadotropin secretion.

    Lages Adriana De Sousa, Lopes Valentim, Anderson Richard

    Vitamins and hormones · 2026 · PMID 41912296

    View on PubMed →
  5. [5]

    Analysis and Characterization of Kisspeptin and Its Analogues in Serum and Urine Samples by Liquid Chromatography-High-Resolution Mass Spectrometry for Doping Control Purposes.

    Krombholz Sophia, Korsmeier Linus, Thomas Andreas et al.

    Drug testing and analysis · 2026 · PMID 42057309

    View on PubMed →
  6. [6]

    Serum kisspeptin levels in women with polycystic ovary syndrome: A systematic review and meta-analysis.

    Siahaan S C, Sa'adi A, Hendarto H et al.

    The Medical journal of Malaysia · 2026 · PMID 41914593

    View on PubMed →
  7. [7]

    Kisspeptin exacerbates androgen-induced follicular dysplasia by promoting Drp1 phosphorylation imbalance and mitochondrial excessive fission in granulosa cells of polycystic ovary syndrome.

    Li Xiaoyan, He Ying, Wang Yiran et al.

    Journal of ovarian research · 2026 · PMID 42057167

    View on PubMed →
  8. [8]

    Kisspeptin-10 attenuates pulmonary arterial hypertension via restoration of mitochondrial function in pulmonary artery smooth muscle cells.

    Huang Sijia, Chen Zixuan, Gong Wanwei et al.

    Neuropeptides · 2026 · PMID 41955717

    View on PubMed →
  9. [9]

    Kisspeptin-54 confers renal protection in diabetic nephropathy by ameliorating endothelial permeability through ZEB1 inhibition.

    Gao Lichao, Lv Qiang, Wang Yujie et al.

    Tissue & cell · 2026 · PMID 41950743

    View on PubMed →
  10. [10]

    Integrating mechanistic models to decode the GnRH pulse generator in female mice.

    Nechyporenko Kateryna, Ivanova Deyana, Li Xiao Feng et al.

    Journal of molecular endocrinology · 2026 · PMID 41988873

    View on PubMed →
  11. [11]

    Photoperiodic modulation of puberty through melatonin-kisspeptin-GnRH signalling in female Wistar rats.

    Shah Harsh, Dan Nehareeka, Salunke Ankita et al.

    Photochemical & photobiological sciences · 2026 · PMID 42018125

    View on PubMed →
  12. [12]

    Serum kisspeptin levels in pregnant and non-pregnant diestrus bitches: a pilot study.

    Coppola Temy, Barbato Olimpia, Menchetti Laura et al.

    Frontiers in veterinary science · 2026 · PMID 42003949

    View on PubMed →
  13. [13]

    Kisspeptin-10 Promotes Hormone Secretion, Ovarian Follicles Development and Fecundity via PI3K/AKT/ERK Signal Pathway in Mice.

    Suocheng Wei, Linglong Xu, Jingshuang Gao et al.

    Molecular reproduction and development · 2026 · PMID 41952615

    View on PubMed →