Ipamorelin

Ipamorelin is a small lab-made peptide (a short chain of just five amino acids, the building blocks of proteins). In studies it is described as one of the first compounds that very selectively prompts the body to release growth hormone. It belongs to a group of compounds that mimic ghrelin (a natural body hormone often called the hunger hormone) and has been used as a research tool to study selective growth-hormone release.

How it works

Ipamorelin switches on the ghrelin receptor, known by the code name GHS-R1a (the docking point on cells that the hunger hormone ghrelin normally acts through). Turning it on is studied for prompting the pituitary gland (a small gland at the base of the brain) to release growth hormone, through a path separate from the GHRH pathway (the other main way growth hormone release is triggered) [1]. A key point reported in the first studies is how selective it is: it prompted growth-hormone release without meaningfully raising other hormones such as ACTH, cortisol (the stress hormone), or prolactin, even at doses well above what was needed for the growth-hormone effect [1].

What researchers have studied it for: the growth hormone and IGF-1 system

In awake animals, ipamorelin was reported to prompt a clear, dose-related release of growth hormone, and researchers have used it to compare growth-hormone release driven by the ghrelin receptor with release driven by GHRH [1]. Because it is so selective, it is a common research tool for studying ghrelin-receptor effects on the growth hormone and IGF-1 system (IGF-1 is a growth signal triggered by growth hormone) without stress hormones getting in the way [1].

What researchers have studied it for: body composition and bone

Animal studies have looked at compounds of this type for effects on measures such as body-weight gain and bone mineral, to study the downstream results of prompted growth-hormone release [1].

What the research hasn't shown yet

The supporting evidence is mostly from animal and mechanism studies. The research does not show that this compound is safe or effective for any one person who buys it, and no benefit to the buyer is implied. Ipamorelin is supplied by K4 Elite only as a reference compound for laboratory and test-tube research, not for any other use.

In laboratory settings the lyophilized peptide is typically reconstituted with bacteriostatic or sterile water to the desired concentration. Store the lyophilized powder at -20°C, keep reconstituted solution at 2-8°C, minimize freeze-thaw cycles, and protect from light to preserve peptide integrity.