Name: Ipamorelin 5mg
Brand: Imperial Peptides
SKU: IMP-4099
Price: 24.00 USD
Availability: InStock

What is Ipamorelin?

Ipamorelin is a five-amino-acid peptide (Aib-His-D-2Nal-D-Phe-Lys-NH2) designed as a ghrelin mimetic. It is frequently cited in the growth-hormone secretagogue literature as one of the more receptor-selective compounds in its class, distinguishing it from older, broader-acting growth hormone-releasing peptides (GHRPs).

This listing is Ipamorelin 5mg from Imperial Peptides (Australia), sold on Stairway to Gray with escrow: your payment is held until the order arrives and only then released to the brand.

How it is understood to work

Ipamorelin binds the growth hormone secretagogue receptor (GHS-R1a) in the pituitary and hypothalamus, triggering calcium-mediated release of growth hormone from somatotroph cells. Research comparing it with earlier secretagogues reports that it produces this GH release with comparatively little accompanying rise in cortisol, prolactin, or ACTH, attributed to its more selective receptor engagement.

Research status

Ipamorelin is studied in growth-hormone pulsatility research, often alongside a GHRH analogue, as well as in models of body composition, bone density, gastrointestinal motility, and post-surgical recovery. The bulk of this evidence comes from cell-based and animal studies; while GHS-R1a pharmacology is well established, ipamorelin itself has not completed human clinical development as an approved medicine.

This listing: Imperial Peptides Ipamorelin

Brand: Imperial Peptides
Also sold by: UWA Biotech 5mg $50.00 · SynTide Research 5mg $28.00 · TFC Peptides 5mg $35.00 · HK Peptide 5mg $30.00 · Cyprus Peptides 5mg $91.00 · Lilipeptide Ipamorelin $52.00

Lab testing

Imperial Peptides published a Janoshik #154282 report for this compound. Test: Purity & Content (HPLC). Result: 99.89% purity · 4.78 mg. Tested May 20, 2026. Verification key 4US41KNIL8S7 can be checked at janoshik.com.

View the report · How to read it (Testing 101) · Every report for this compound

Bought through escrow: the brand is only paid after you confirm delivery. If the parcel never arrives, or an independent test shows the wrong compound or a significant under-fill, open a claim before releasing payment.

Specifications

Compound: Ipamorelin
Class: Selective growth-hormone secretagogue (pentapeptide)
Form: Lyophilized (freeze-dried) powder
Sequence: Aib-His-D-2-Nal-D-Phe-Lys-NH₂
Molecular formula: C38H49N9O5
Molecular weight: 711.86 g/mol
Per vial: 5mg
Brand: Imperial Peptides · Australia

Handling & storage

Supplied as a lyophilized powder; store unopened vials at -20C protected from light, and keep reconstituted solution refrigerated, using it within the timeframe set by the study protocol.

Concentration check: adding 2 ml of bacteriostatic water to one 5mg vial gives 2.5 mg/ml. The Research Lab calculator in your dashboard works this out for any volume.

Questions

How does Ipamorelin differ from other GH secretagogue peptides like GHRP-2 or GHRP-6?

All act on the ghrelin receptor, but ipamorelin is reported to be more selective for GH release with less associated cortisol, prolactin, or appetite stimulation in comparative studies.

Why are 5mg and 10mg pack sizes both offered?

Both contain the identical ipamorelin peptide at the same purity specification; the sizes simply differ in total mass per vial for different study-scale needs.

For laboratory research use only. Not for human or veterinary use. Nothing on this page is medical advice.