Research Use Only Trending

Ipamorelin — Selective Growth Hormone Secretagogue

A selective growth hormone secretagogue that mimics ghrelin, studied for its ability to release GH without affecting cortisol or prolactin levels.

Growth HormoneLongevityMuscle GrowthSleep & Recovery

Reconstituted for research use • Per research protocol

In Stock
Single Vial Pack of 10

Ipamorelin

CAS #: 170851-70-4
$15 and up
Ships today · Research use only
Apr 13
Ordered
Apr 14-15
Shipped
Apr 20-24
Delivered

Compound Details

Formula C38H49N9O5
Molecular Weight 711.85 g/mol
CAS Number 170851-70-4
Sequence
Aib-His-D-2-Nal-D-Phe-Lys-NH2
Appearance White lyophilized powder

Mechanism of Action

Ipamorelin binds to ghrelin/GHS receptors on pituitary somatotroph cells, triggering selective growth hormone release. Unlike broader GH secretagogues, it does not stimulate cortisol or prolactin secretion, resulting in a cleaner GH response profile in research models.

Overview

Ipamorelin is a synthetic pentapeptide and selective growth hormone secretagogue that mimics the action of ghrelin. Unlike other GH-releasing peptides, ipamorelin stimulates growth hormone release from the pituitary in a highly selective manner without significantly elevating cortisol, prolactin, or ACTH levels. In preclinical and clinical studies, ipamorelin has been investigated for its role in GH optimization, bone mineral density support, and lean body composition. Its selectivity makes it a preferred compound in research protocols focused on isolated GH pathway modulation. Often studied in combination with CJC-1295, which acts through the complementary GHRH receptor pathway for synergistic growth hormone release.

Pricing

2mg lyophilized vial $15
5mg lyophilized vial $29

Volume pricing available — create an account to see tiered rates.

Purity & Testing

COA available. Third-party testing by Finnrick Analytical.

Certificates of Analysis (COA) are available in your account. Third-party testing is conducted to verify identity, purity, and potency.

Storage & Handling

Store lyophilized at -20°C or 2-8°C. Reconstituted: 2-8°C, use within 30 days.

Shipping

Ships worldwide from 6 distribution centers via USPS Ground Advantage

Available for direct research purchase

Research-use-only products are sold strictly for laboratory and research purposes. By purchasing, you acknowledge that these products are not intended for human or veterinary use, and you agree to PharmaOrder's RUO terms of service.

Published Research

Selected peer-reviewed studies referenced in this product overview.

Ipamorelin, the first selective growth hormone secretagogue
Raun K, Hansen BS, Johansen NL, et al. — European Journal of Endocrinology (1998)
First characterization of ipamorelin as a highly selective GH secretagogue that does not affect ACTH, cortisol, prolactin, or FSH/LH release.
Growth hormone releasing peptides: clinical and basic aspects
Ghigo E, Arvat E, Giordano R, et al. — Journal of Endocrinological Investigation (2001)
Comprehensive review comparing GH secretagogues including ipamorelin, GHRP-6, and GHRP-2 with respect to selectivity and side-effect profiles.
Ipamorelin, a new growth-hormone-releasing peptide, induces longitudinal bone growth in rats
Andersen NB, Malmlöf K, Johansen PB, et al. — Growth Hormone & IGF Research (2001)
Demonstrated ipamorelin promotes longitudinal bone growth in hypophysectomized rats with a dose-dependent response profile.

Why PharmaOrder

🔬
COA Verified
Every batch tested by independent labs. Results available in your account.
🚚
Global Shipping
6 distribution centers worldwide. USPS Ground Advantage with tracking.
💰
Volume Pricing
Tiered pricing for larger orders. Create an account to unlock lower rates.

FAQ

What makes ipamorelin different from other GH secretagogues?
Ipamorelin is highly selective for growth hormone release. Unlike GHRP-6 or GHRP-2, it does not significantly increase cortisol, prolactin, or appetite-stimulating hormones, making it ideal for isolated GH research.
Can ipamorelin be combined with CJC-1295?
Yes. Ipamorelin (ghrelin receptor) and CJC-1295 (GHRH receptor) target complementary pathways and are frequently studied together for synergistic GH release effects.
How should ipamorelin be stored?
Store lyophilized ipamorelin at -20°C for long-term or 2-8°C for short-term storage. Reconstituted peptide should be refrigerated at 2-8°C and used within 30 days.
Editorial Review
Updated March 2026. Reviewed against product catalog, quality, and fulfillment standards. This page is educational and not instructions for human use. See our editorial standards and quality process.

Compare Ipamorelin

CJC-1295 vs Ipamorelin

Hexarelin vs Ipamorelin

Related Products

RUO

CJC-1295

A synthetic GHRH analog studied for its ability to sustain elevated growth hormone levels in research models.

$45
View Details →

Ready to order?

In stock. Ships within 24 hours.

Order Now