GHRP-6 is a first-generation hexapeptide GHRP and ghrelin receptor agonist. It produces strong GH release with significant appetite stimulation.

Why does GHRP-6 cause hunger?

It directly activates ghrelin receptors, triggering the same appetite signalling pathway as the natural hunger hormone ghrelin.

How is GHRP-6 different from GHRP-2?

GHRP-6 produces more appetite stimulation and has gastroprotective properties. GHRP-2 produces a stronger GH pulse with less hunger.

Is GHRP-6 useful for cachexia research?

Yes. The strong appetite stimulation makes it a key tool in wasting condition research where caloric intake needs to increase.

Why does GHRP-6 cause hunger?

GHRP-6 is an agonist at the ghrelin receptor GHS-R1a, which is found not only on pituitary somatotrophs (where it releases GH) but also on hypothalamic neurons that regulate appetite. Activating those hypothalamic receptors mimics what natural ghrelin does after a period of fasting - it signals hunger.

How does GHRP-6 compare with GHRP-2 and hexarelin?

All three are ghrelin-receptor agonists. GHRP-6 is the original and the most orexigenic; GHRP-2 is ~2-3× more potent at GH release with less hunger; hexarelin is the most potent of the three at GH release and has the clearest cardioprotective profile via CD36. Ipamorelin is the cleanest, with no cortisol or prolactin baggage.

Can GHRP-6 be combined with GHRH analogs?

Yes - this is a standard research stack. GHRP-6 + GHRH (or a GHRH analog like sermorelin or CJC-1295 no DAC) produces supra-additive GH release because the two peptides activate different receptors that converge on GH exocytosis.

How should GHRP-6 be stored?

Keep the lyophilised powder frozen at −20 °C. After reconstitution with bacteriostatic water, refrigerate at 1-6 °C and protect from light. GHRP-6 is fairly stable in solution within the normal peptide-handling window.

Lyophilised · batch-documented · discreet packaging

>99% Purity // Janoshik Verified // First-Gen GHRP // 6 Amino Acids

GHRP

Name: GHRP-6
Brand: New-U Research Peptides
SKU: ghrp-6
Availability: InStock

His-DTrp-Ala-Trp-DPhe-Lys-NH2 // CAS 87616-84-0 // First-Generation GHRP

First-generation GHRP with potent GH release and notable appetite stimulation.

GHRP-6 is a first-generation 6 amino acid peptide that triggers strong growth hormone release by activating ghrelin receptors. It was among the first GH-releasing peptides ever studied. GHRP-6 is notable for causing significant hunger - a property used in wasting disease research. It also protects the stomach lining in animal models.

First-Gen GHRP pioneered the class

Strong Appetite stimulation

6 Amino acids

4–8 Weeks Typical cycle length

Third-party tested

Every batch independently verified by Janoshik & Freedom Diagnostics for purity and identity.

Full COA included

Certificate of Analysis confirms peptide purity, amino acid composition, and absence of contaminants.

Discreet shipping

Every order ships in plain, unmarked packaging with full tracking. No external branding or product details visible.

Research-grade

Uniform vial presentation, consistent labeling, and batch-level documentation every time.

10-vial pack

View Certificate of Analysis COA

Janoshik & Freedom Diagnostics verified
Certificate of analysis per batch
Direct-from-manufacturer sourcing
Discreet, unmarked packaging

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Research use only. All compounds are sold strictly for in-vitro research and educational purposes. Not approved for human use, therapeutic application, or as food or cosmetic products. By purchasing, you agree to use these products only for legitimate research purposes.

GHRP

Third-party tested

Full COA included

Discreet shipping

Research-grade

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