# Ipamorelin + GHRP-2

> Two GHS-R1a secretagogues co-lyophilised 1:1 in one 10 mg vial

All products are sold strictly for laboratory research use only. Not for human or veterinary use.

- Web page: https://peptidemedixeu.com/en/products/ipamorelin-ghrp-2/
- Brand: Peptide Medix EU
- Category: [Growth Hormone Blends](https://peptidemedixeu.com/en/collections/growth-hormone-blends/)
- Purity: ≥99% by HPLC per component; lot-matched COA available
- from €85 (EUR)

## Sizes and prices (EUR)

| Size | Price | SKU |
| --- | --- | --- |
| 10 mg · (5/5) | €85 | IPAMORELIN-GHRP-2-10-MG-5-5 |

_Catalog prices at build time; the web page and checkout are authoritative._

## Specifications

- **Peptide class:** Two growth hormone-releasing peptides (GHRPs), both GHS-R1a agonists
- **Form:** Co-lyophilized powder blend, sealed glass vial with crimped stopper
- **Purity:** ≥99% by HPLC per component; lot-matched COA available
- **Available sizes:** 10 mg total — 5 mg Ipamorelin / 5 mg GHRP-2
- **Solubility:** Bacteriostatic or sterile water
- **Storage (lyophilized):** −20 °C, sealed and protected from light and moisture
- **Storage (reconstituted):** 2–8 °C, protected from light, used within the study window
- **Components:** Ipamorelin and GHRP-2 (pralmorelin)
- **Blend ratio:** 1:1 by mass
- **Ipamorelin CAS number:** 170851-70-4
- **Ipamorelin formula and mass:** C38H49N9O5, 711.85 g/mol
- **Ipamorelin sequence:** Aib-His-D-2-Nal-D-Phe-Lys-NH2
- **GHRP-2 CAS number:** 158861-67-7
- **GHRP-2 formula and mass:** C45H55N9O6, 817.97 g/mol
- **GHRP-2 sequence:** D-Ala-D-2-Nal-Ala-Trp-D-Phe-Lys-NH2
- **Also known as:** GHRP-2 is also catalogued as pralmorelin, KP-102 or GPA-748
- **Primary target:** Growth hormone secretagogue receptor 1a (ghrelin receptor)
- **Research areas:** GHS-R1a pharmacology, secretagogue potency and selectivity, somatotroph reserve, cortisol and prolactin cross-reactivity, IGF-1 axis

## Description

Two growth hormone secretagogues share this vial — both acting on one receptor but engineered for different selectivity. Ipamorelin is an amidated pentapeptide, Aib-His-D-2-Nal-D-Phe-Lys-NH2, made from non-natural building blocks such as 2-aminoisobutyric acid and D-2-naphthylalanine. GHRP-2 (pralmorelin) is the second-generation hexapeptide of the growth hormone-releasing peptide family, D-Ala-D-2-Nal-Ala-Trp-D-Phe-Lys-NH2. Both activate growth hormone secretagogue receptor 1a, the ghrelin receptor.

Since both hit the same receptor, this is not a two-receptor design like the GHRH-plus-GHRP combinations; instead it puts the pair that researchers compare most often into one preparation. The published contrast is selectivity versus potency: ipamorelin is said to release growth hormone with barely any cortisol, ACTH or prolactin response, whereas GHRP-2 is usually the stronger releaser per mole but cross-reacts more with other pituitary outputs. Their masses are similar enough that the 1:1 fill of 5 mg each works out at about 1.15:1 in moles — an unusually tidy comparison for a blend. Reconstitute with bacteriostatic or sterile water run down the inside of the vial, swirling rather than shaking.

## Frequently asked questions

### How much of each peptide does the vial contain?

The 10 mg fill is split 1:1 — 5 mg ipamorelin plus 5 mg GHRP-2. With equal masses, one reconstitution calculation gives you the concentration of both. The exact loading appears on the label and on the lot's certificate of analysis.

### Do the two peptides target different receptors?

No — both activate growth hormone secretagogue receptor 1a (the ghrelin receptor). That sets this blend apart from GHRH-analogue combinations like CJC-1295 plus a GHRP, which engage two genuinely separate receptors on the same somatotroph.

### How do ipamorelin and GHRP-2 differ?

It comes down to selectivity versus potency. Ipamorelin, a pentapeptide, is widely regarded as the most selective of the classic GHRPs, with little reported impact on cortisol and prolactin. GHRP-2, a hexapeptide, is typically the more potent releaser per mole but shows more cross-reactivity with other pituitary outputs.

### Which documents come with the vial?

A lot certificate of analysis covering both peptides, each listed separately with HPLC purity of ≥99% and identity confirmed by mass spectrometry. Please quote the lot number printed on the vial when requesting it.

### Which diluent should I choose?

Bacteriostatic water is standard for vials drawn from repeatedly, since its benzyl alcohol preservative tolerates multiple punctures; sterile water suits a single-use solution. Run the diluent down the glass, swirl instead of shaking and keep the reconstituted vial refrigerated.

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All products offered on this website are intended solely for in-vitro laboratory research and development by qualified professionals. They are not drugs, foods, cosmetics or dietary supplements, and are not intended to diagnose, treat, cure or prevent any disease. Products must not be introduced into humans or animals in any manner. By purchasing, you confirm that you are a qualified researcher and accept full responsibility for handling and storage in accordance with applicable laws.

Peptide Medix EU · https://peptidemedixeu.com/en/products/ipamorelin-ghrp-2/