NOT MEDICAL ADVICE. No information on this site should be considered medical advice. Research peptides are not intended for human consumption — in-vitro lab use only. Consult a physician prior to introducing anything into the human body.
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Home/Growth Hormone, Longevity & Anti-Aging/Sermorelin

Sermorelin

A synthetic GHRH(1-29) peptide that stimulates endogenous growth hormone release; used diagnostically and in research protocols.

Overview

Sermorelin is a synthetic peptide corresponding to the first 29 amino acids of human growth-hormone-releasing hormone (GHRH 1-29), the minimal fragment with full secretagogue activity. It stimulates the pituitary to release growth hormone in a pulsatile manner. It has been used in diagnostic growth-hormone stimulation testing and appears in research and clinic protocols exploring support of the endogenous GH/IGF-1 axis.

Mechanism

Sermorelin binds the GHRH receptor on pituitary somatotrophs, increasing growth-hormone synthesis and release, which in turn raises circulating IGF-1. Because it acts upstream of growth hormone itself, its effects depend on intact pituitary function and remain subject to normal somatostatin negative feedback, distinguishing it from direct growth-hormone administration.

Dosing

Research and clinic protocols typically use daily subcutaneous injection, often in the evening, while diagnostic testing uses an intravenous bolus with serial GH sampling. Regimens are protocol-specific and are not an approved therapeutic standard in most countries.

  • Subcutaneous injection is standard in daily research protocols
  • Diagnostic use employs an intravenous bolus with timed GH measurements
  • Frequency and dose are individualized in off-label protocols

Expected Effects

  • Increased endogenous growth-hormone pulse amplitude and IGF-1 in responsive individuals
  • Used diagnostically to assess pituitary growth-hormone reserve
  • Proposed effects on body composition and recovery are extrapolated from GH physiology and lack strong controlled data

Side Effects & Tolerability

Generally well tolerated; injection-site reactions, transient flushing, and headache are reported. Because it raises GH and IGF-1, the long-term effects of sustained use are not established, and it should not be used when pituitary function is impaired.

Storage

Lyophilized peptide should be stored cold and desiccated, protected from light. Reconstituted solutions are typically refrigerated and used within a short window, avoiding repeated freeze-thaw cycles.

Related peptides

Advanced Senolytic Peptide VariantsVendor category for peptides promoted as senolytic agents for clearing senescent cells; specific products are not identified in the literature.AOD-9604Synthetic 15-amino-acid peptide based on the C-terminal lipolytic region of human growth hormone; clinical development for obesity was not completed.Chronobiology Master Regulator AnalogsMarketing-style name implying circadian-regulation peptides; no such products are described in the literature.CJC-1295 + IpamorelinResearch combination of a long-acting GHRH analog (CJC-1295) and a ghrelin-mimetic secretagogue (Ipamorelin), used off-label to stimulate the growth hormone axis.Comprehensive Longevity Peptide Complex AnalogsVendor complex blend marketed for longevity support; composition is undocumented and unstudied.Epitalon (Expanded)Synthetic tetrapeptide (Ala-Glu-Asp-Gly) developed by the Khavinson group; reported effects on pineal function and telomerase activity remain largely unreplicated.