GHRP-2 vs Ipamorelin
| Attribute | GHRP-2 Growth Hormone Releasing Peptide 2 | Ipamorelin Selective GH secretagogue |
|---|---|---|
| Category | Muscle Growth & Performance | Muscle Growth & Performance |
| Best known for | Reliable GH-release research | Clean growth hormone pulse research |
| In plain English | Stronger GH pulse than ipamorelin but weaker than hexarelin, with mild appetite stimulation and small cortisol/prolactin bumps. | 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 | Activates the GHSR receptor to stimulate GH release. | Selectively activates the GHSR receptor, stimulating pulsatile growth hormone release from the pituitary. |
| Researchers study | GH secretion, appetite, and IGF-1 elevation. | GH secretion, IGF-1 elevation, body composition, and sleep quality. |
| Internet discussion | Used by researchers who want appetite stimulation alongside GH research. | The default beginner GH peptide on forums. Discussed for sleep, recovery, and lean gains. |
GHRP-2
Reliable GH-release research
Stronger GH pulse than ipamorelin but weaker than hexarelin, with mild appetite stimulation and small cortisol/prolactin bumps.
Activates the GHSR receptor to stimulate GH release.
GH secretion, appetite, and IGF-1 elevation.
Used by researchers who want appetite stimulation alongside GH research.
GHRP-2 sits between ipamorelin and hexarelin in potency and side-effect profile.
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.