GHRPs (Growth Hormone-Releasing Peptides) and GHRHs (Growth Hormone-Releasing Hormones) are two distinct classes of peptides that influence growth hormone release through different mechanisms.
GHRHs
GHRHs are analogs of the natural growth hormone-releasing hormone produced by the hypothalamus. They bind to GHRH receptors on the pituitary and stimulate GH release. Examples include CJC-1295 and related compounds.
GHRPs
GHRPs are synthetic peptides that act through the ghrelin receptor (GHS-R). They do not mimic natural GHRH but produce similar downstream effects on GH release. Ipamorelin and GHRP-2 are common research examples.
Key Differences
| Aspect | GHRH | GHRP |
|---|---|---|
| Origin | Natural hormone analog | Synthetic |
| Half-life | Varies by compound | Generally shorter |
Research Use
Both classes are valuable for studying GH physiology. Combination studies can explore additive or synergistic effects. All products are for in-vitro and preclinical research only.