# Hexarelin > Potent ghrelin-mimetic with cardiac research interest. Source: https://peptides.cafe/peptide/hexarelin Category: Growth Hormone Axis · Cardiac Tag: Growth hormone ## Mechanism A synthetic hexapeptide and potent GHS-R agonist. Stimulates GH release more strongly than GHRP-6 and shows cardioprotective signaling in preclinical ischemia-reperfusion models, partly independent of GH. ## Research areas - GH release - Cardiac ischemia-reperfusion (preclinical) - Left ventricular function in animal models ## Common research protocols - Short research cycles: Used in short subcutaneous cycles due to receptor desensitization with chronic use. ## Study summaries - "Hexarelin and the cardiovascular system" — Cardiovascular Research (2006): Reviewed direct cardioprotective effects of hexarelin in animal models. ## Considerations - Not FDA-approved. - Tachyphylaxis with prolonged use. - Prohibited by WADA. ## Disclaimer Educational content only. Not medical advice, diagnosis, or treatment. Most research peptides are not FDA-approved for human therapeutic use. Consult a licensed clinician before any use.