Head to head
Ipamorelin against GHRP-6
The selectivity comparison inside the GHRP family. GHRP-6 strongly stimulates appetite alongside growth hormone; ipamorelin was designed to release growth hormone with minimal effect on cortisol or prolactin. Neither has an approval anywhere.
Column A
IpamorelinIpamorelin Acetate
A selective growth hormone secretagogue and ghrelin receptor agonist that stimulates pulsatile GH release with minimal effect on cortisol or prolactin.
Column B
GHRP-6Growth Hormone Releasing Peptide 6
An early GH secretagogue hexapeptide that strongly stimulates growth hormone and appetite.
Side by side, on the facts we can check
| Attribute | Ipamorelin | GHRP-6 |
|---|---|---|
| Category | Growth Hormone | Growth Hormone |
| FDA status | Not FDA-approved | Not FDA-approved |
| Half-life | ~2 hours | ~15-60 minutes |
| Molecular weight | 711.85 Da | 873.0 Da |
| Mechanism | Agonizes the ghrelin/GH secretagogue receptor (GHS-R1a) on the pituitary, stimulating pulsatile growth hormone secretion. | Agonizes the ghrelin/GH secretagogue receptor (GHS-R1a) to stimulate GH release and appetite. |
| Human studies cited | 1 | 0 |
| Legal status, US | Not approved; research use only | Not approved; research use only |
Frequently asked questions
What is the difference between Ipamorelin and GHRP-6?
Ipamorelin: A selective growth hormone secretagogue and ghrelin receptor agonist that stimulates pulsatile GH release with minimal effect on cortisol or prolactin. GHRP-6: An early GH secretagogue hexapeptide that strongly stimulates growth hormone and appetite.
Which has stronger research evidence, Ipamorelin or GHRP-6?
This database does not grade compounds. It counts what was run in people: 1 of the 3 studies cited on the Ipamorelin profile were human work, against 0 of 3 for GHRP-6. Those counts are of our own citation lists and understate any larger literature, and neither is a recommendation.
Are Ipamorelin and GHRP-6 FDA-approved?
Ipamorelin: Not FDA-approved. GHRP-6: Not FDA-approved.
Related posts
Blog articles that cover Ipamorelin or GHRP-6, newest first.
Reviewed Sep 2026. This page sets two published records side by side. It is educational, it is not medical advice, and it contains no dosing protocols or recommendations for personal use.