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Growth Hormone Secretagogues

Hexarelin

Also known as: Examorelin

Hexarelin (His-D-2MeTrp-Ala-Trp-D-Phe-Lys-NH2) is a synthetic hexapeptide growth hormone secretagogue developed by Mediolanum (Italy) in the 1990s. It is a potent ghrelin-receptor (GHSR-1a) agonist that also binds the CD36 scavenger receptor, giving it a cardioprotective signal distinct from other GHRPs. It is not FDA-approved for any indication and remains a research-only compound; its clinical development for GH deficiency and cardiac indications did not reach approval. A defining feature versus other GHRPs is rapid, pronounced tachyphylaxis with chronic daily dosing.

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Research depth

13 citations indexed for Hexarelin

All research on Hexarelin →

animal · 2026

Hexarelin promotes the survival of retinal ganglion cells after optic nerve transection

Objective Hexarelin is a growth hormone secretagogue receptor type 1a agonist with a potent anti-apoptotic effect. We studied the neuroprotective effect of hexarelin on the survival of retinal ganglion cells (RGCs) in the retina following optic nerve transection (ONT).

review · 2026

Therapeutic Peptides in Aesthetic, Metabolic and Endocrine Conditions: Effects, Safety, Clinical Applications, and Future Perspectives

Therapeutic peptides are short chains of amino acids used to treat metabolic and endocrine conditions such as obesity and type 2 diabetes.

Study · 2025

Identification of alexamorelin consumption biomarkers using human hepatocyte incubations and high-resolution mass spectrometry

Alexamorelin is a synthetic peptide and growth hormone secretagogue (GHS) with potential performance-enhancing properties, making its use and abuse a topic of interest in clinical research and doping monitoring.

review · 2025

Cisplatin-Induced Muscle Wasting and Atrophy: Molecular Mechanism and Potential Therapeutic Interventions

Platinum-based chemotherapeutics, particularly cisplatin, are crucial in the treatment of various malignancies due to their strong antitumor effects. However, a significant side effect of cisplatin is muscle atrophy, which severely impairs physical strength, diminishes quality of life and complicates cancer therapy.

animal · 2025

Intranasal Delivery of a Ghrelin Mimetic Engages the Brain Ghrelin Signaling System in Mice

Ghrelin, the endogenous ligand of the growth hormone secretagogue receptor (GHSR), promotes food intake and other feeding behaviors, and stimulates growth hormone (GH) release from the pituitary.

Study · 2024

Pharmacological targeting of the hyper-inflammatory response to SARS-CoV-2-infected K18-hACE2 mice using a cluster of differentiation 36 receptor modulator

The scientific and medical community faced an unprecedented global health hazard that led to nearly 7 million deaths attributable to the rapid spread of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection.