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Ipamorelin

Switches on the pituitary through the ghrelin receptor, but leaves cortisol and prolactin alone.

PropertyValue
TypePeptide, 5 amino acids
ReceptorGhrelin receptor
Research fieldGrowth hormone release, recovery, sleep
Research statusClinically studied
FormFreeze dried powder, also in blends

What it is

A short peptide mimicking ghrelin, the hormone an empty stomach releases. Ghrelin releases growth hormone through a second route, alongside the GHRH route.

How it works

Where older variants such as GHRP-2 and GHRP-6 also touch cortisol and prolactin, ipamorelin does so barely or not at all. In a study design that makes it the cleanest signal within this family.

What the research shows

Clinical research has been done, including on bowel movement after surgery. For the uses it is known for in this field the evidence is thinner.

Research status

Clinically studied in humans.

Practical

Often studied together with a GHRH peptide because the two routes reinforce each other; the combination with CJC-1295 without DAC is the most studied blend in this group.

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This site is made by the team behind Apex Bio Research, a Dutch supplier of research peptides with a certificate of analysis per batch.

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What this site is and is not
This site explains what the scientific literature says about peptides. It is not medical advice and not a set of instructions. The substances discussed here are research compounds: they are not approved for use in humans or animals. If you have a health question, see a doctor.

Updated 2026-10-03

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