MensResearch OnlyNot For Human Consumption

Gonadorelin

GnRH · Luteinising Hormone-Releasing Hormone · LHRH

A synthetic copy of the brain's own gonadotropin-releasing signal, used in research on how pulse timing controls the hormonal axis.

MECHANISM OF ACTION

Gonadorelin is a synthetic copy of a natural brain signal (GnRH, gonadotropin-releasing hormone) that your hypothalamus normally sends in regular pulses to the pituitary gland. Those pulses tell the pituitary to release LH and FSH, hormones that travel to the testes and tell them to produce testosterone and sperm. The critical point: it only works when given in pulses. If given continuously without breaks, the pituitary gets overwhelmed and actually shuts down, the opposite of what you want. When testosterone is supplied from outside the body, the brain stops sending GnRH signals (because it detects enough testosterone already), which can cause the testes to shrink and sperm production to stop. Pulsatile gonadorelin keeps the testes receiving their activation signal, preserving their function.

RESEARCH APPLICATIONS

  • Pulsatile GnRH receptor pharmacology
  • HPG axis signalling research
  • Pituitary responsiveness modelling
  • Endocrine feedback-loop studies

RESEARCH HIGHLIGHTS

Pulse timing determines response

1978

A central finding in the literature: delivered in pulses the receptor responds, delivered continuously it downregulates. This makes it a standard tool for studying receptor desensitisation. Research observations only.

Ref: Belchetz et al., Science

RESEARCH PROTOCOL NOTES

Physical formSupplied lyophilised (freeze-dried powder) unless stated otherwise
ReconstitutionBacteriostatic water; swirl gently, do not shake
HandlingProtect from light; avoid repeated freeze-thaw cycles

Chemical Identity

Molecular FormulaC55H75N17O13
Molecular Weight1182.3 g/mol
CAS Number33515-09-2
SolubilitySoluble in water

Sequence

pGlu-His-Trp-Ser-Tyr-Gly-Leu-Arg-Pro-Gly-NH2

Storage & Stability

Lyophilised: -20°C. Reconstituted: 2–8°C, 7–14 days. Very short plasma half-life makes careful reconstitution timing important.

Regulatory Status

Unscheduled in South Africa. Supplied for laboratory and research use only. Not a registered medicine, not evaluated by SAHPRA, not for human consumption. WADA prohibited (S2).

Important - read before proceeding

This page is a summary of published scientific literature about a molecule. It is provided for research and educational purposes only. Nothing on this page is medical advice, a diagnosis, a recommendation, a prescription, or a claim that this compound treats, cures, prevents or improves any condition in humans. Research findings described here are observations reported by third-party researchers about the molecule - they are not statements about the product supplied by Bio Intelligence, and they should not be read as an expected outcome.

Compounds supplied are not registered medicines, have not been evaluated by SAHPRA, and are not for human consumption. No dosing, route of administration or usage guidance is provided by Bio Intelligence. If you have a health concern, speak to a registered healthcare practitioner.