# Ipamorelin > Selective GH secretagogue with a clean research profile. Source: https://peptides.cafe/peptide/ipamorelin Category: Growth Hormone Axis Tag: Recovery · Sleep ## Mechanism A selective ghrelin/GHS-R1a receptor agonist that stimulates GH release with minimal effect on cortisol, prolactin, or appetite — distinguishing it from older secretagogues like GHRP-6. ## Research areas - Endogenous GH release without cortisol elevation - Sleep quality and recovery markers - Lean tissue retention in catabolic states ## Common research protocols - Evening administration: Studied in evening dosing to align with natural nocturnal GH pulse. - Stacked with CJC-1295: Common pairing in research to combine GHRH + ghrelin-mimetic signaling. ## Study summaries - "Ipamorelin, the first selective growth hormone secretagogue" — European Journal of Endocrinology (1998): Characterized selectivity for GH release without affecting ACTH, cortisol, or prolactin. ## Considerations - Generally well tolerated in research; long-term human safety data are limited. - Not FDA-approved. - Use in sport is prohibited (WADA). ## Disclaimer Educational content only. Not medical advice, diagnosis, or treatment. Most research peptides are not FDA-approved for human therapeutic use. Consult a licensed clinician before any use.