Home Research Comparisons Hexarelin vs Ipamorelin
Executive Summary
Hexarelin and Ipamorelin represent opposite ends of the GHRP spectrum: maximum potency versus maximum selectivity. Hexarelin is the most potent GHRP for acute GH release but carries significant off-target effects including cortisol and prolactin elevation, rapid desensitization, and potential cardiac activity. Ipamorelin is the most selective GHRP, producing clean GH release without affecting cortisol, prolactin, or appetite, but with lower acute potency. For pure GH research, Ipamorelin is preferred; for studies requiring maximum GH spike or cardiac research, Hexarelin has unique properties.
Peptide Profiles
Head-to-Head Comparison
Property Hexarelin Ipamorelin Drug Class Growth Hormone Releasing Peptide Selective GHRP Molecular Formula C47H58N12O6 C38H49N9O5 GH Potency Highest (most potent GHRP) Moderate (selective) Effect on Cortisol Significant increase No significant effect Effect on Prolactin Significant increase No significant effect Appetite Effect Moderate increase Minimal effect Desensitization Rapid (requires cycling) Minimal Cardiac Effects Cardioprotective research None documented Selectivity Low (multiple effects) High (GH-specific) Duration of Effect Diminishes with use Sustained with continued use