Ipamorelin: Selective GH Secretagogue Mechanisms and Research Applications
Ipamorelin binds selectively to GHSR-1a receptors with a receptor affinity profile that distinguishes it from every other growth hormone secretagogue — stimulating pulsatile GH release while leaving cortisol, prolactin, and ACTH pathways largely undisturbed. This article examines the molecular basis of that selectivity, the amplification dynamics observed when ipamorelin is combined with GHRH analogs, and the experimental data that define its kinetic and dosing parameters in research settings.