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Also known as: Hexarelin, Examorelin
A potent growth hormone releasing peptide and ghrelin receptor agonist, among the strongest GH-stimulating GHRPs, with additional cardioprotective effects studied in preclinical work.
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Hexarelin is a synthetic hexapeptide that strongly activates the GHS-R1a (ghrelin) receptor to drive substantial growth hormone release. It also binds the CD36 scavenger receptor, which underlies its researched cardioprotective and anti-fibrotic effects independent of GH. Its high potency can lead to faster receptor desensitization than gentler secretagogues, an important consideration in research design.