Class & Mechanism — Hexarelin Acetate is a synthetic hexapeptide and a growth hormone-releasing peptide (GHRP) that functions as an agonist at the growth hormone secretagogue receptor (GHSR). It stimulates the release of growth hormone (GH) from the anterior pituitary gland by binding to GHSR, which is distinct from the receptor for growth hormone-releasing hormone (GHRH) [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50].
Research-documented benefits — [1] Improved cardiac function in rats after experimental myocardial infarction. [2] Protection against post-ischemic ventricular dysfunction in aged rats. [3] Restoration of somatotropic function in GH-deficient rats without increasing pituitary GH mRNA and plasma IGF-1 levels.
General-knowledge benefits — Hexarelin is known to increase linear growth in short children, promote muscle growth and strength, and have potential cardioprotective effects. It may also have implications in the treatment of GH deficiency and as a therapeutic agent in bodybuilding and athletics for promoting anabolism [35][36][37][48][49][50].
Typical injectable protocol — Research-only; experimental doses have ranged from 80 μg/kg to 400 μg/kg administered subcutaneously or intramuscularly, with frequency varying from once to multiple times per day, depending on the study design.
Key risks / contraindications — Potential risks include desensitization with long-term use, interference with the body's natural GH secretion, and potential cardiovascular risks due to increased heart rate and blood pressure. Contraindicated in individuals with pre-existing cardiovascular conditions or hypersensitivity to the peptide.
Bottom line — Hexarelin is an experimental peptide used in research settings to study GH secretion and its effects on growth, body composition, and cardiac function.
References
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- Muscle_ Fundamental Biology and Mechanisms of Disease
- Peptides and Non Peptides of Oncologic and Endocrine Interest