Overview
GHRP-6 (Growth Hormone Releasing Peptide-6) is a synthetic hexapeptide and the first member of the GHRP family to be identified and characterized. It acts as an agonist at the growth hormone secretagogue receptor (GHSR-1a), stimulating robust pulsatile growth hormone (GH) release from the anterior pituitary. GHRP-6 is notable not only for its GH-releasing properties but also for its pronounced appetite-stimulating effects — a characteristic that has made it a useful tool in research contexts studying ghrelin signaling, appetite regulation, and metabolic control. FenaLife supplies GHRP-6 for laboratory research use only.
Research Background
GHRP-6 was first synthesized in the 1980s as part of efforts to develop orally or parenterally active GH secretagogues. Its discovery led directly to the identification of the ghrelin receptor (GHSR-1a) as the endogenous target for this class of compounds. GHRP-6 has been studied in clinical research for GH deficiency, pediatric short stature, cachexia, and gastroparesis — the latter due to its prokinetic gastric motility effects. Research comparing GHRP-6 to GHRP-2 consistently shows GHRP-6 produces stronger appetite stimulation, making it the preferred tool when studying ghrelin-mediated orexigenic signaling.
Studied Mechanisms
GHRP-6 binds GHSR-1a with high affinity, triggering intracellular signaling through Gq protein coupling and downstream phospholipase C activation. This results in intracellular calcium mobilization and PKC activation in pituitary somatotrophs, ultimately driving GH secretion. In the hypothalamus, GHSR-1a activation stimulates GHRH neurons and inhibits somatostatin release, creating a synergistic amplification of GH output. GHRP-6 also activates GHSR-1a in the vagus nerve and gastric mucosa, which accounts for its appetite-stimulating and gastroprokinetic properties — effects that are weaker in second-generation GHRPs like GHRP-2.
Molecular Profile
Type: Synthetic hexapeptide. Sequence: His-D-Trp-Ala-Trp-D-Phe-Lys-NH2. Target: GHSR-1a. Molecular formula: C46H56N12O6. Molecular weight: 873.02 g/mol. Purity: ≥98% by HPLC.
Storage and Handling
Store lyophilized GHRP-6 at -20°C, protected from light and humidity. Reconstitute with bacteriostatic water. Store reconstituted solution at 4°C and use within 4 to 6 weeks. Avoid repeated freeze-thaw cycles.
Research Use Only
For laboratory research purposes only. Not for human or veterinary use. Certificate of Analysis available per batch.
🔬 Research Compounds Referenced: BAC Water 10ml