Hexarelin (5mg) Research Peptide: A Potent and Stable GHRP for Growth Hormone & Cardioprotection Studies

If your research investigates growth hormone (GH) secretion, cardiovascular protection, or neuroprotection, Hexarelin (5mg) research peptide — also known as Examorelin — offers a precisely defined and well‑characterised synthetic tool. Hexarelin is a synthetic hexapeptide that belongs to the growth hormone-releasing peptide (GHRP) class. As a potent agonist of the growth hormone secretagogue receptor (GHSR-1a), it mimics the action of the natural hormone ghrelin to stimulate the release of growth hormone from the pituitary gland. However, unlike many other GHRPs, Hexarelin is distinguished by its enhanced metabolic stability, oral bioavailability, and unique ability to exert direct cardioprotective effects independent of GH release. This makes Hexarelin (5mg) research peptide a valuable tool for laboratories investigating endocrinology, cardiovascular biology, and neuroprotection.

At Chinese Grey Peptides, we supply high‑purity Hexarelin (5mg) research peptide to research institutions and wholesale buyers across the United Kingdom, France, Germany, Spain, Sweden, Italy, and the USA. Every batch is lyophilised, HPLC‑verified to >98% purity, and accompanied by a Certificate of Analysis (COA), ensuring your investigations into GH regulation, cardioprotection, and neuroprotection begin with uncompromising quality.

What Is Hexarelin and How Does It Work?

To fully appreciate the research potential of Hexarelin (5mg) research peptide, it is essential to understand its biochemical design, enhanced stability, and the distinct mechanisms by which it exerts its effects.

The Synthetic Hexapeptide

Hexarelin is a synthetic hexapeptide (six amino acids) with the sequence H-His-D-2-Methyl-Trp-Ala-Trp-D-Phe-Lys-NH₂. Its molecular formula is C₄₇H₅₈N₁₂O₆, and its molecular weight is approximately 887 g/mol. It has a CAS number of 140703-51-1.

The peptide incorporates two D-amino acids (D-2-methyltryptophan and D-phenylalanine), which confer enhanced resistance to enzymatic degradation compared to other GHRPs like GHRP-6. This structural modification results in a longer duration of action and the ability to be administered via multiple routes, including oral, intranasal, and subcutaneous.

Mechanism of Action: Dual‑Pathway Signalling

The biological activity of Hexarelin (5mg) research peptide is mediated through two distinct but complementary pathways:

1. GH-Releasing Activity via GHSR-1a

Hexarelin acts as a potent agonist of the growth hormone secretagogue receptor (GHSR-1a), a G‑protein‑coupled receptor expressed in the hypothalamus and pituitary. Upon binding, Hexarelin induces a conformational change in GHSR-1a, activating the Gq/11 protein subunit and initiating a downstream signalling cascade involving phospholipase C (PLC), which hydrolyses PIP₂ into IP₃ and DAG. IP₃ triggers the release of stored intracellular calcium (Ca²⁺), while DAG activates Protein Kinase C (PKC). The combined elevation of intracellular Ca²⁺ and activation of PKC leads to the exocytosis of growth hormone-containing vesicles from somatotroph cells. In comparative studies, Hexarelin has demonstrated stronger GH‑releasing activity than GHRH and is slightly more effective than GHRP-6.

2. GH-Independent Cardioprotective Actions via GHSR and CD36

Beyond its endocrine effects, Hexarelin exerts direct, GH‑independent actions on the heart and blood vessels. It binds to both GHSR-1a and the non‑GHSR receptor CD36 in cardiac tissue. Activation of these receptors triggers protective signalling cascades that:

• Inhibit apoptosis (programmed cell death) in cardiac and skeletal muscle

• Reduce oxidative stress and inflammation

• Improve cardiac systolic function and reduce malondialdehyde production

• Protect cardiomyocytes from ischemia/reperfusion injury

Research Note: Enhanced Stability and Bioavailability

When compared with ghrelin, Hexarelin is chemically more stable and functionally more potent. This stability allows for research applications that are not feasible with the unstable natural peptide ghrelin, including oral and intranasal administration. Hexarelin has a longer pharmacokinetic half‑life than ghrelin, making its effect more durable.

Key Research Applications for Hexarelin (5mg)

Hexarelin (5mg) research peptide is a versatile tool with applications spanning several domains of biomedical research.

1. Growth Hormone & Endocrine Research

As a potent GH secretagogue, Hexarelin is a valuable tool for studying the regulation of the GH/IGF-1 axis. Research applications include:

• Pulsatile GH Secretion: Investigating the mechanisms of pulsatile GH release and its role in metabolic regulation

• GH Dynamics: Studying the GH response to secretagogues in various physiological and pathological states

• Diagnostic Applications: Evaluating Hexarelin as a potential diagnostic tool for GH deficiency

• Comparative Studies: Comparing Hexarelin with GHRP-2 and other GH secretagogues

2. Cardiovascular & Cardioprotection Research

The direct cardioprotective actions of Hexarelin make it a unique tool for cardiovascular research. Studies have demonstrated:

• Ischemia/Reperfusion Injury Protection: Hexarelin protects cardiomyocytes from I/R injury through modification of the IL‑1 signalling pathway

• Improved Cardiac Function: Hexarelin treatment improves cardiac systolic function and increases the number of surviving cardiomyocytes

• Anti-Fibrotic Effects: Hexarelin attenuates cardiac fibrosis by decreasing collagen deposition and modulating matrix metalloproteinases (MMPs)

• Anti-Atherosclerotic Properties: Reduces the formation of atherosclerotic plaques

• Anti-Inflammatory Effects: Hexarelin reduces inflammatory cytokines and rebalances deregulated sympathetic/vagal activity

3. Neuroprotection & Neurogenesis Research

Emerging research has highlighted Hexarelin’s neuroprotective properties. Research applications include:

• Neuroprotection: Hexarelin exerts cyto‑protective effects at the mitochondrial level in cardiac and skeletal muscles

• Oxidative Stress Protection: Hexarelin effectively antagonises H₂O₂‑induced damage to Neuro‑2A cells, improving cell viability

• Cytoprotection: Exploring the cyto‑protective effects of Hexarelin at the mitochondrial level in neural tissue

4. Metabolic & Bone Research

Hexarelin has been studied for its effects on metabolism and bone:

• Bone Loss Prevention: Hexarelin counteracts bone loss in gonadectomised male rats

• Somatotrophic Function: Long‑term treatment with Hexarelin normalised some biological indices of somatotrophic function in aged rats

• Metabolic Research: Investigating the role of GH secretagogues in metabolic regulation

5. Ageing & Gerontology Research

Hexarelin has been investigated in the context of ageing:

• Age‑Related GH Decline: Short‑term administration of Hexarelin does not desensitise the growth hormone responsiveness in human aging

• Restoration of GH Release: Intermittent treatment with Hexarelin may restore the reduced GH release in aging

• Long‑Term Studies: Investigating the effects of long‑term Hexarelin administration on the somatotrophic axis in aged rats

Chemical & Physical Specifications for Hexarelin (5mg)

Accurate characterisation of Hexarelin (5mg) research peptide is essential for reproducible experimental design.

Note: The 5 mg mass refers to the weight of the peptide in its lyophilised form. Hexarelin is typically supplied as an acetate salt, which enhances aqueous solubility. The peptide is chemically more stable than GHRP-6 due to the substituted (2 Me)Trp residue. The peptide is for research use only (RUO). Not for human consumption.

Reconstitution & Handling Protocol for Hexarelin (5mg)

Proper reconstitution of Hexarelin (5mg) research peptide is critical for maintaining its structural integrity and biological activity.

Step 1 – Preparation

• Bring the sealed Hexarelin vial and your chosen diluent (sterile bacteriostatic water or sterile PBS, pH 5‑7) to room temperature. Condensation can degrade the lyophilised powder.

• Clean your work surface with 70% ethanol and lay out sterile syringes, alcohol wipes and a clean work mat.

Step 2 – Vial Sanitisation

• Wipe the rubber stopper of the Hexarelin vial with a fresh 70% ethanol wipe. Allow the alcohol to evaporate completely before piercing.

Step 3 – Reconstitution

• Draw your desired volume of diluent into a sterile syringe. A common starting concentration for research applications is 5 mg per 0.5 mL of diluent, yielding a 10 mg/mL stock solution.

• Insert the needle and slowly inject the diluent against the inner glass wall. Do not spray directly onto the lyophilised powder.

• Gently swirl the vial until the solution is clear and fully dissolved. Do not shake vigorously, as shaking can cause denaturation.

Step 4 – Aliquoting & Storage

• Immediately after dissolution, aliquot the reconstituted Hexarelin into single‑use sterile vials.

• Store aliquots at –20°C. Avoid repeated freeze‑thaw cycles, as peptides are susceptible to degradation.

• Once thawed, store at 2‑8°C and use within 7 days.

Concentration Reference Table for Hexarelin (5mg)

Adjust diluent volume based on your experimental requirements. For cell culture applications, typical working concentrations may range from 0.1‑10 µM.

Storage & Stability Guidelines for Hexarelin (5mg)

Why Choose Chinese Grey Peptides for Hexarelin (5mg)?

As an authentic licensed peptide supplier based in the USA, we supply Hexarelin (5mg) research peptide and a wide range of research‑grade compounds under rigorous quality assurance protocols, fully aligned with Google’s E‑E‑A‑T standards (Experience, Expertise, Authoritativeness, Trustworthiness).

• Verified Purity: Independent HPLC analysis with purity guaranteed >98% for every batch.

• GMP‑Compliant Manufacturing: All peptides are synthesised under strict quality control conditions.

• Full Traceability: Batch‑specific Certificates of Analysis (COA) are available for every order.

• Wholesale Supply: We serve research institutions, laboratories, and wholesale buyers across the UK, EU, and USA with flexible volume pricing and reliable logistics.

• USA‑Based Regulatory Compliance: All products are supplied strictly as research‑grade chemicals for laboratory use only (RUO). This product is intended for scientific research and experimental use in controlled settings. Not for human or veterinary use.

Researchers across the United States—including those at leading institutions—trust us for fast domestic delivery, transparent documentation and professional technical support.

FAQ: Hexarelin (5mg) Research Peptide

What is Hexarelin (5mg) research peptide?
Hexarelin (Examorelin) is a synthetic hexapeptide and a potent growth hormone‑releasing peptide (GHRP) that acts as an agonist of the growth hormone secretagogue receptor (GHS‑R1a). It is chemically more stable than ghrelin and GHRP-6, and exhibits both GH‑releasing and direct cardioprotective actions.

What is the sequence and molecular weight of Hexarelin?
The sequence is H-His-D-2-Methyl-Trp-Ala-Trp-D-Phe-Lys-NH₂. Its molecular formula is C₄₇H₅₈N₁₂O₆, and its molecular weight is approximately 887 g/mol.

What are the primary research applications for Hexarelin?
Hexarelin is used in growth hormone and endocrine research, cardiovascular and cardioprotection studies (ischemia/reperfusion injury, cardiac function, anti‑fibrotic effects), neuroprotection and neurogenesis research, metabolic and bone research, and ageing and gerontology research.

What is the mechanism of action of Hexarelin?
Hexarelin acts through a dual mechanism: it binds to GHSR-1a to stimulate pulsatile GH release via the Gq/11‑PLC‑IP₃‑Ca²⁺ pathway, and it binds to both GHSR-1a and CD36 in cardiac tissue to exert direct cardioprotective effects independent of GH.

 What is the half‑life of Hexarelin?
The plasma half‑life of Hexarelin is approximately 60‑70 minutes, reflecting the protective effects of its D‑amino acid modifications and C‑terminal amidation against proteolytic degradation.

How does Hexarelin differ from other GHRPs in research?
Hexarelin is more resistant to proteolytic degradation than GHRP‑6 due to its D‑amino acid substitutions. It has a longer duration of action and can be administered via multiple routes, including oral and intranasal. It also exhibits stronger GH‑releasing activity than GHRH in some studies.

 What purity does your Hexarelin (5mg) meet?
Our Hexarelin is tested to >98% purity by HPLC. A Certificate of Analysis (COA) is supplied with every order.

 How should I reconstitute Hexarelin (5mg)?
Reconstitute with sterile bacteriostatic water or sterile PBS (pH 5‑7). Allow the vial to reach room temperature, then slowly inject the diluent against the inner glass wall and swirl gently. Do not shake. A typical starting concentration is 10 mg/mL.

 How should I store reconstituted Hexarelin?
Reconstituted Hexarelin should be stored at 2‑8°C and used within 7 days. For longer storage, aliquot immediately into single‑use vials and store at –20°C for up to 3 months. Avoid repeated freeze‑thaw cycles.

 Is Hexarelin research peptide legal to purchase in the USA?
Yes. Hexarelin is a laboratory reagent sold for research use only (RUO). It is fully legal to purchase, possess, and use in the United States for legitimate in‑vitro or in‑vivo scientific research, provided it is not marketed with therapeutic claims. Note: Hexarelin is banned by the World Anti‑Doping Agency (WADA) for athletic use.

Does Chinese Grey Peptides ship internationally?
Yes. We ship across the UK, Europe (France, Germany, Spain, Sweden, Italy), and the USA from our US warehouse. Wholesale pricing is available for bulk orders.

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• IUPHAR/BPS Guide to Pharmacology: Examorelin
• FDA GSRS / UNII: Examorelin
• WADA Growth Hormone Releasing Factors Testing Guide
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Ships to USA, Canada, UK & Europe

Chinese Grey Peptides supports shipping to the USA, Canada, the United Kingdom, France, Germany, Spain, Sweden, Italy, and Europe where permitted.

Shipping support may include:

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Shipping times may vary by order size, carrier, destination, customs process, product status, and local requirements.

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Chinese Grey Peptides focuses on quality, support, and clear communication. We help buyers review product details before placing an order.

Customers choose us for:

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We aim to make the buying process transparent, professional, and documentation-focused.

Important Compliance Notice

Hexarelin 5mg may be regulated differently depending on the country, product type, labeling, intended use, buyer type, and destination. Chinese Grey Peptides does not provide medical advice, dosing instructions, injection guidance, growth-hormone claims, anti-aging claims, fat-loss claims, muscle-growth claims, recovery claims, athletic-performance claims, bodybuilding claims, disease claims, treatment claims, or personal-use recommendations.

Customers are responsible for understanding and following all local laws, import rules, prescription requirements, compounding rules, sport-governing rules, labeling rules, advertising rules, and permitted-use requirements before ordering.

From its enhanced stability as a synthetic hexapeptide to its well‑characterised dual mechanism of action—stimulating pulsatile GH release via GHSR-1a and exerting direct cardioprotective effects through GHSR and CD36—Hexarelin (5mg) research peptide provides a precisely defined and increasingly valuable platform for advanced endocrinological, cardiovascular, and neuroprotective research. Its ability to improve cardiac function, protect against ischemia/reperfusion injury, and promote neurogenesis—supported by peer‑reviewed studies published in PubMed, PMC, and other authoritative journals—makes it a valuable addition to any laboratory investigating growth hormone biology, cardiovascular protection, or neuroprotection. By choosing high‑purity, lab‑verified Hexarelin (5mg) research peptide from Chinese Grey Peptides, you ensure that your research is built on a foundation of quality, reproducibility, and scientific integrity.

Ready to advance your research with Hexarelin (5mg)? Browse our product catalogue, request a wholesale quote, or contact our support team today to discuss your laboratory’s specific needs. Place your order now and receive GMP‑grade Hexarelin delivered directly to your facility in the USA, UK, or Europe.