Sermorelin vs Ipamorelin
GHRH analog vs selective GHRP.
| Attribute | Sermorelin GHRH(1-29) | Ipamorelin Selective GH secretagogue |
|---|---|---|
| Category | Muscle Growth & Performance | Muscle Growth & Performance |
| Best known for | Endogenous GH-release research | Clean growth hormone pulse research |
| In plain English | The original GH peptide. Sermorelin is shorter-acting and milder than CJC-1295 — researchers consider it the gentle introduction to GH peptide research. | Researchers like ipamorelin because it gives a clean GH pulse without raising cortisol or prolactin — making it the most-discussed 'starter' GH peptide. |
| How it works | Stimulates pituitary GH release by binding the GHRH receptor. | Selectively activates the GHSR receptor, stimulating pulsatile growth hormone release from the pituitary. |
| Researchers study | Age-related GH decline, body composition, sleep, and pediatric GH deficiency. | GH secretion, IGF-1 elevation, body composition, and sleep quality. |
| Internet discussion | Older audience favors it for being well-studied with a long history. | The default beginner GH peptide on forums. Discussed for sleep, recovery, and lean gains. |
Sermorelin
Endogenous GH-release research
The original GH peptide. Sermorelin is shorter-acting and milder than CJC-1295 — researchers consider it the gentle introduction to GH peptide research.
Stimulates pituitary GH release by binding the GHRH receptor.
Age-related GH decline, body composition, sleep, and pediatric GH deficiency.
Older audience favors it for being well-studied with a long history.
Sermorelin is the original GHRH analog with the longest research history in GH peptide work.
Ipamorelin
Clean growth hormone pulse research
Researchers like ipamorelin because it gives a clean GH pulse without raising cortisol or prolactin — making it the most-discussed 'starter' GH peptide.
Selectively activates the GHSR receptor, stimulating pulsatile growth hormone release from the pituitary.
GH secretion, IGF-1 elevation, body composition, and sleep quality.
The default beginner GH peptide on forums. Discussed for sleep, recovery, and lean gains.
Ipamorelin is the cleanest of the GH secretagogues, producing GH pulses without significant cortisol or prolactin increase.