GHRP-6 vs Ipamorelin
| Attribute | GHRP-6 Growth Hormone Releasing Peptide 6 | Ipamorelin Selective GH secretagogue |
|---|---|---|
| Category | Muscle Growth & Performance | Muscle Growth & Performance |
| Best known for | Ghrelin-receptor GH release and appetite research | Clean growth hormone pulse research |
| In plain English | Same family as ipamorelin but with stronger appetite stimulation and more cross-talk (prolactin, cortisol). | 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 ghrelin receptors in the pituitary and hypothalamus, triggering GH release and strong hunger signaling. | Selectively activates the GHSR receptor, stimulating pulsatile growth hormone release from the pituitary. |
| Researchers study | GH release, appetite, and cachexia models. | GH secretion, IGF-1 elevation, body composition, and sleep quality. |
| Internet discussion | Discussed as the 'appetite GHRP' — often cited for hunger more than recovery. | The default beginner GH peptide on forums. Discussed for sleep, recovery, and lean gains. |
GHRP-6
Ghrelin-receptor GH release and appetite research
Same family as ipamorelin but with stronger appetite stimulation and more cross-talk (prolactin, cortisol).
Activates ghrelin receptors in the pituitary and hypothalamus, triggering GH release and strong hunger signaling.
GH release, appetite, and cachexia models.
Discussed as the 'appetite GHRP' — often cited for hunger more than recovery.
GHRP-6 is an early-generation ghrelin mimetic researched for GH release and appetite stimulation.
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.