Ipamorelin peptide is a synthetic five-amino-acid growth hormone secretagogue that binds the ghrelin receptor (GHS-R1a). Vi Corpus supplies Ipamorelin as a 5 mg lyophilised vial for Australian laboratories studying growth hormone release and pituitary signalling.
Key research features of Ipamorelin peptide
- High selectivity. Early animal studies found it released growth hormone without large rises in ACTH or cortisol.
- Short, defined structure. As a pentapeptide, it is simple to characterise and compare between batches.
- Complements GHRH analogues. Researchers pair it with CJC-1295 to study two separate GH pathways at once.
- Pulsatile release model. It produces distinct GH peaks, which suits timing and feedback studies.
- Third-party tested. Batch reports are available through our Lab Tests page.
Ipamorelin peptide specifications
| Compound | Ipamorelin |
|---|---|
| Amount | 5 mg per vial |
| Form | Lyophilised (freeze-dried) powder |
| Sequence | Aib-His-D-2Nal-D-Phe-Lys-NH2 |
| Molecular formula | C38H49N9O5 |
| Molar mass | approx. 711.9 g/mol |
| Reconstitution | Bacteriostatic water (sold separately) |
Research applications
Ipamorelin was developed in the 1990s as one of the first selective growth hormone secretagogues. Since then, researchers have used it to study GH pulses, bone growth in animal models and gut motility after surgery. In addition, it is a common comparison compound for oral secretagogues such as MK-677. Because it acts on a different receptor from GHRH, it is also useful for mapping how the two systems interact.
Storage and handling
Keep unopened vials at 2–8 °C and away from light. After reconstitution with bacteriostatic water, refrigerate the solution and use sterile technique for each draw.
Frequently asked questions
How is Ipamorelin different from CJC-1295?
Ipamorelin mimics ghrelin at the GHS-R1a receptor, while CJC-1295 mimics GHRH. As a result, they trigger growth hormone release through two separate pathways.
Is Ipamorelin the same as somatropin?
No. Somatropin is growth hormone itself. Ipamorelin only signals the pituitary to release its own GH.
Is it approved for human use?
No. We supply it for laboratory research use only and not for human consumption.



