Growth Hormone Releasing Peptides: Mechanisms & Research

Growth hormone axis peptides are often grouped together, but they are not mechanistically identical.

GH Axis Primer

• GHRH signaling stimulates GH release.
• Ghrelin receptor signaling also modulates GH pulse dynamics.
• Somatostatin acts as an inhibitory regulator.

Major Classes

GHRPs

Examples include ipamorelin and GHRP variants acting through ghrelin-related pathways.

GHRHs

Examples include CJC-1295 variants and mod-GRF analogs acting on GHRH pathways.

What Researchers Compare

• Pulse profile characteristics
• Tolerability patterns
• Downstream markers (for example IGF-related trends)
• Protocol practicality over time

Practical Takeaway

Use mechanism-aware comparisons instead of treating GH-axis peptides as interchangeable.

Educational content only. Not medical advice.