Ipamorelin UK — Mechanism, Selectivity & Research Handling

Ipamorelin is a synthetic pentapeptide — five amino acids — designed as a selective agonist of the growth hormone secretagogue receptor. Where non-selective secretagogues also trigger adrenocorticotropic and prolactin responses, Ipamorelin's published profile is far cleaner, which makes it a useful isolated variable in study design.

If a compound moves several hormonal axes at once, attributing an observed effect to growth hormone signalling specifically becomes difficult. Ipamorelin's narrow receptor profile makes it a comparatively clean tool for that purpose, which is why it appears so often as the secretagogue arm in combination studies.

Ipamorelin, like AOD-9604 and Tesamorelin, dissolves best with a two-stage approach: add 0.5ml of acetic acid water first and swirl until fully dissolved, then add 2.5ml of bacteriostatic water. Never shake the vial at any stage.

Once reconstituted, store at 2–8°C and use within 28 days. Use the calculator for exact per-dose volumes rather than a generic chart.

Because Ipamorelin acts on the ghrelin receptor and GHRH analogues such as CJC-1295 and Tesamorelin act on the GHRH receptor, combination protocols are common in the literature — two separate receptors, one shared axis.

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• CJC-1295 UK guide
• Tesamorelin UK guide
• Peptide calculator
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