GHRP-6
Research OnlyStrong EvidenceGrowth Hormone Releasing Peptide-6
The original synthetic GHRP — produces strong GH release with pronounced hunger stimulation, making it popular for bulking and bodybuilding research.
Half-Life
~15–60 minutes
Molecular Weight
873.03 g/mol
GHRP-6 was one of the first synthetic GH secretagogues developed, originally synthesized in the 1980s. It produces potent GH release through GHS-R1a agonism but is distinguished from other GHRPs by its marked stimulation of appetite and hunger — an effect mediated through ghrelin receptor activation in the hypothalamus and vagus nerve. This hunger-stimulating property has made it popular in bodybuilding research for mass-gaining protocols, while limiting its appeal for body composition-focused use. Like other GHRPs, it elevates cortisol and prolactin at research doses.
Also Known As
Amino Acid Sequence
His-D-Trp-Ala-Trp-D-Phe-Lys-NH2
Reconstitution
Reconstitute with bacteriostatic water. Typical concentration: 1–2 mg/mL.
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