Kisspeptin Peptide (Kisspeptin-10): HPG Axis Regulator

Kisspeptin peptide is a naturally occurring neuropeptide encoded by the KISS1 gene. Acting as the primary upstream master switch for the Hypothalamic-Pituitary-Gonadal (HPG) axis, kisspeptin binds directly to G-protein coupled receptors (GPR54 / KISS1R) in the hypothalamus to trigger the pulsatile release of Gonadotropin-Releasing Hormone (GnRH).

In reproductive physiology and endocrinology, Kisspeptin-10 (the core 10-amino-acid active decapeptide fragment) is widely researched for its ability to stimulate downstream secretion of Luteinizing Hormone (LH) and Follicle-Stimulating Hormone (FSH) without suppressing natural feedback loops.

Key Research Benefits of Kisspeptin-10

• Endogenous LH & FSH Stimulation: Promotes native pituitary release of LH and FSH, stimulating natural testosterone production and spermatogenesis pathways.

• HPG Axis Restoration: Evaluated in research models involving hypogonadotropic hypogonadism to restore natural hormonal pulsatility without shutdown.

• Neuroendocrine & Mood Regulation: Receptors in the limbic system link kisspeptin signaling to behavioral modulation, stress response, and sexual motivation pathways.

• Metabolic & Vascular Impact: Interacts with peripheral receptors to modulate glucose homeostasis and vascular tone.

Kisspeptin-10 Dosage Schedule & Protocols

Because Kisspeptin-10 features a short biological half-life, timing and administration protocols are critical in scientific studies:

Protocol Type	Target Objective	Recommended Dosage	Schedule Frequency
Pulsatile / Acute Protocol	Acute LH/FSH Spike Evaluation	1mcg/kg to 2mcg/kg (~100mcg – 200mcg)	Single subcutaneous administration per trial
Intermittent Protocol	Endogenous HPG Axis Maintenance	100mcg to 250mcg	2 to 3 times per week over a 4-week cycle
Pulsatile Micro-Dosing	Simulating Natural GnRH Pulses	50mcg to 100mcg	Administered every 4 to 8 hours in intensive lab models

Establishing a consistent kisspeptin-10 dosage schedule prevents receptor desensitization while maintaining active pituitary signaling.

Safety & Potential Side Effects

Kisspeptin-10 displays a highly targeted mechanism of action, making its side-effect profile mild in research settings:

• Injection Site Reactions: Transient redness or mild stinging at the subcutaneous injection point.

• Hormonal Fluctuations: Temporary warmth, facial flushing, or mild mood shifts due to acute spikes in LH and testosterone levels.

• Receptor Desensitization: Continuous, high-dose administration without breaks can downregulate GPR54 receptors, reducing long-term responsiveness.

Product Specifications & Handling

• Compound: Kisspeptin-10 (KISS1 Fragment 112–121)

• Form: Freeze-dried (lyophilized) powder vial

• Purity: Premium Research Standard (>98% HPLC Verified)

• Storage Instructions: Store unopened vials frozen at -20°C. Reconstitute with sterile Bacteriostatic Water, keep refrigerated (2°C to 8°C), and use within 28 days.

Frequently Asked Questions (FAQs)

What is Kisspeptin peptide used for?

Kisspeptin is a neuropeptide researched for its role in triggering GnRH release from the hypothalamus, which subsequently stimulates LH and FSH production to regulate reproductive hormone levels.

How does Kisspeptin-10 differ from hCG?

Unlike Human Chorionic Gonadotropin (hCG), which directly mimics LH at the testicular receptor level, Kisspeptin acts further upstream in the hypothalamus, prompting the body’s natural pulsatile release of GnRH, LH, and FSH.

What is the standard Kisspeptin-10 dosage schedule in research?

Common protocols evaluate 100mcg to 250mcg administered subcutaneously 2 to 3 times per week. Intermittent scheduling helps prevent GPR54 receptor downregulation.

How should a Kisspeptin 10mg vial be stored after reconstitution?

Once reconstituted with Bacteriostatic Water, store the vial refrigerated at 2°C to 8°C and use within 28–30 days to maintain maximum molecular potency.

Where can I buy pure Kisspeptin-10 online?

You can order lab-tested, high-purity Kisspeptin-10 peptide vials directly online from