Ipamorelin vs GHRP-6
Ipamorelin and GHRP-6 belong to the same class — both are growth-hormone-releasing peptides acting on the ghrelin receptor — so the comparison is really about selectivity. Ipamorelin is the clean, third-generation secretagogue; GHRP-6 is the older, potent one that also drives a strong appetite response.
Ipamorelin
A selective third-generation GH secretagogue studied for clean GH pulses.
BEST STUDIED FOR
Selective, low-side-effect GH research
R439View product →
GHRP-6
An early GH-releasing peptide studied for potent GH release and appetite stimulation.
BEST STUDIED FOR
GH-release + appetite-response research
Explore GH research peptides →
SIDE BY SIDE
| Ipamorelin | GHRP-6 | |
|---|---|---|
| Class | GH secretagogue (ghrelin-receptor agonist) | GH secretagogue (ghrelin-receptor agonist) |
| Selectivity | Highly selective | Less selective — broader ghrelin-receptor effects |
| Appetite effect studied | Minimal | Strong appetite stimulation |
| Cortisol / prolactin | Minimal effect in studies | Measurable rise reported at higher doses |
| Generation | Third-generation, clean-profile | Early / first-generation GHRP |
| Research use | Clean GH-pulse research | GH release where appetite response is relevant |
WHEN TO RESEARCH WHICH
Research Ipamorelin when the interest is a clean GH pulse with minimal off-target effects — little impact on cortisol, prolactin or appetite in studies. Research GHRP-6 when the appetite-stimulating (ghrelin-like) effect is itself part of the research question, accepting a less selective profile. Same receptor, very different selectivity.
FREQUENTLY ASKED
What is the difference between Ipamorelin and GHRP-6?
Both are GH secretagogues acting on the ghrelin receptor, but Ipamorelin is highly selective with minimal effect on appetite, cortisol or prolactin, whereas GHRP-6 is an older, less selective peptide that strongly stimulates appetite. The class is the same; the selectivity differs.
Which has fewer off-target effects?
Ipamorelin is the cleaner of the two in the research literature, studied for a GH pulse without the appetite spike or cortisol/prolactin rise associated with GHRP-6. Ipamorelin is HPLC-verified and CoA-certified.
Do you stock GHRP-6?
We stock Ipamorelin. GHRP-6 appears here as a reference comparison; browse our GH research range for current stock. All compounds are for research purposes only.
MORE COMPARISONS
All products supplied for research purposes only. Not for human consumption.