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GHRP-2
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⚠️ Research Use Only

These products are for laboratory research only and not intended for medical use. They are not FDA-approved to diagnose, treat, cure, or prevent any disease. By purchasing, you certify they will be used solely for research and not for human or animal consumption.

What is GHRP-2?

GHRP-2 (Growth Hormone–Releasing Peptide-2, or Pralmorelin) is a synthetic hexapeptide that acts as a ghrelin receptor (GHS-R1a) agonist, stimulating the endogenous release of growth hormone (GH) from the pituitary gland. It is part of the GHRP family (alongside GHRP-6 and Ipamorelin) and has been studied for its effects on growth hormone secretion, metabolism, and recovery. By mimicking the natural hunger hormone ghrelin, GHRP-2 promotes GH pulsatility, metabolic activation, and tissue regeneration — making it a central focus of endocrine and anti-aging research.

Key Research
  • Growth hormone secretion & IGF-1 support
  • Muscle growth, repair & recovery
  • Fat metabolism & body composition
  • Cellular energy & mitochondrial function
  • Anti-aging & vitality enhancement
  • Sleep quality & GH pulse regulation
  • Immune balance & inflammation control
  • Appetite regulation & metabolic health
  • Hormone balance & pituitary function
  • Stress resilience & recovery performance
Specifications
PropertyDetails
CAS Number158861-67-7
Chemical NameD-Alanyl-3-(2-naphthyl)-D-alanyl-L-alanyl-L-tryptophyl-D-phenylalanyl-L-lysinamide (Pralmorelin; GHRP-2)
PubChem CID 6918245
Molecular FormulaC45H55N9O6
Molecular Weight~817.98 g/mol
Physical AppearanceWhite to off-white lyophilized powder
FormSynthetic growth hormone–releasing hexapeptide (lyophilized acetate salt)
Container3 mL glass vial (5 mg net content)
Purity ≥99% verified by HPLC & MS (batch COA via on-vial QR)
SolubilitySoluble in sterile water or compatible aqueous buffer; optimize pH/ionic strength for your assay; filter-sterilize if required
Intended UseLaboratory research only (RUO). Not for human or animal use.
Molecular Structure
GHRP-2 molecular structure
FAQ

How much is in each vial?

Each vial contains precisely the amount indicated on the label. For instance, a 10mg vial includes precisely 10mg of lyophilized peptide. Researchers may divide it into smaller fractions, such as four 2.5mg portions, while the total amount remains 10mg.

Does it come with instructions?

USA Peptides Direct products are designated for in vitro research. Prior to working with them, conduct thorough research. Our team will offer general assistance via text post-purchase.

What other supplies are needed?

Peptides come as lyophilized powder. They are not reconstituted, and any necessary bacteriostatic water or syringes must be obtained separately for research purposes.

How long does a vial last?

Peptides remain stable for up to 2 years in lyophilized powder form. After reconstitution, refrigerate and expect stability for about 2 months.

Is this for human or veterinary use?

No. This product is sold strictly as RUO and must not be used in humans or animals.

What purity do you provide?

Each 5 mg vial is ≥99% by HPLC with MS identity confirmation; third-party testing is performed on every lot (see COA).

How should I reconstitute it?

Use sterile water or compatible buffer; gently invert until dissolved. If your protocol requires, 0.22 µm filter-sterilize and aliquot to avoid repeat freeze–thaw.

What in-vitro assays is GHRP-2 commonly used in?

Typical RUO uses include GHSR1a Ca2+ signaling, β-arrestin/internalization workflows, radioligand binding, and LC–MS/MS method development.
References
  1. Bowers, C. Y., et al. Growth hormone–releasing peptide (GHRP): potent GH-releasing activity in humans and animals. Endocrinology 128(2), 1991, 2027–2035.  [Link]
  2. Popovic, V., et al. GHRP-2 stimulates GH secretion and insulin sensitivity in healthy adults. Clinical Endocrinology 46(5), 1997, 537–544.  [Link]
  3. Arvat, E., et al. Endocrine and metabolic effects of growth hormone–releasing peptides in humans. Growth Hormone & IGF Research 7(Suppl 1), 1997, S21–S26.  [Link]
GHRP-2
GHRP-2
5mg
$19.95
One-time

Why Buy from USA Peptides Direct

  • USA Made
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Quality, Storage & Handling

Each lot is confirmed by HPLC (purity) and MS (identity); QR on the vial links to the batch COA. Independent U.S. labs verify purityquantity, and endotoxin.

  • Storage (lyophilized): −20 °C long-term or 2–8 °C short-term; keep desiccated and protected from light.
  • After reconstitution: Use neutral, oxygen-poor buffer when possible; aliquot and store at ≤−20 °C; avoid repeated freeze–thaw.
  • Working solutions: Prepare fresh; minimize exposure to light/alkaline pH to reduce degradation.

Shipping

Ships in validated cold-chain packaging. In-stock orders placed before the daily cutoff dispatch the same day2-Day FedEx/UPS is standard, with overnight options available. Automated text/email updates included.

Compliance & Research Use Only Disclaimer

For laboratory research only. All articles are product information provided on this website are for informational and educational purposes only. Not a drug, cosmetic, food, or household chemical. Not for human or animal use, diagnostic, or therapeutic applications. Buyers warrant they are qualified to handle RUO materials under applicable laws and institutional guidelines. COAs available via QR or upon request.