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GHRP-2
GHRP-2 10 mg – synthetic GH secretagogue
Peptology Ltd. · Recovery and anabolic peptides
GHRP-2 is a synthetic GH secretagogue, GHS-R1a receptor agonist that Peptology supplies strictly for laboratory research, in 10 mg. You can buy GHRP-2 in Cyprus online from €40.00, with same-day dispatch for orders placed by 15:00. 99%+ purity, HPLC/MS certificate for every batch, so every vial comes with documented quality data. Delivery in 5–7 working days with BOX NOW, free from €50; you pay on delivery – by card through the BOX NOW payment link, before you open the locker. The product is not intended for human or veterinary use.
40,00 € · In stock
For research use only / Not a medicine
| Purity | >99% |
|---|---|
| Method | HPLC + LC/MS |
| Laboratory | Analiza Białek |
| Batch | 0226 |
Last updated: 18/10/2026
What is GHRP-2?
GHRP-2 (Growth Hormone Releasing Peptide-2, pralmorelin) is a synthetic hexapeptide belonging to the class of growth hormone secretagogues (GHRPs). It acts as a ghrelin mimetic — an agonist of the ghrelin receptor (GHS-R1a) — strongly stimulating the pituitary to secrete growth hormone (GH).
It is among the most potent GHRPs in terms of GH pulse size. Compared with the more “selective” Ipamorelin, GHRP-2 gives a more intense GH release, but with a small concurrent effect on cortisol, prolactin and appetite.
It is studied in research for stimulation of the GH/IGF-1 axis, body composition and regeneration, often in combination with GHRH analogues such as CJC-1295 without DAC or Sermorelin (the classic GHRH + GHRP stack). See the range in the category all peptides.
In the Peptology version, it is supplied as a lyophilised research-grade powder with purity > 99%, in a 10 mg form. It is intended exclusively for scientific, research and in vitro applications — it is not a medicine and is prohibited in sport (WADA).
Available form: 10 mg
10 MG
Typical research form
High-purity lyophilised powder with a laboratory certificate for each batch.
STRUCTURE
Hexapeptide
Synthetic GHRP, ghrelin receptor agonist.
How GHRP-2 acts — ghrelin receptor
GHS-R1a RECEPTOR
It acts as a ghrelin mimetic at the GHS-R1a receptor of the pituitary — a pathway different from that of GHRH.
STRONG GH PULSE
Causes an intense, short pulse of GH release — among the strongest of the GHRPs.
SYNERGY WITH GHRH
Together with a GHRH analogue (second receptor), the GH pulse is additively enhanced — the classic GHRH + GHRP stack.
Potency versus selectivity
GHRP-2 is placed between the more “crude” GHRP-6 and the “cleaner” Ipamorelin: it offers stronger GH release than Ipamorelin, with a moderate (but real) effect on cortisol, prolactin and appetite — smaller, however, than that of GHRP-6.
Because it acts upstream in the axis (it stimulates the pituitary), the natural negative feedback mechanism is preserved — unlike the administration of exogenous GH. The mechanisms come from preclinical and clinical studies.
Properties and pharmacology
- Class: GH secretagogue (GHRP), synthetic hexapeptide
- Target: ghrelin receptor (GHS-R1a) in the pituitary
- Axis of action: stimulation of pulsatile GH secretion → IGF-1
- Potency: among the strongest GHRPs; moderate effect on cortisol/prolactin/appetite
- Use in stacks: complementary to GHRH analogues (CJC-1295, Sermorelin)
- Status: research peptide; prohibited in sport (WADA)
GHRP-2 vs. Ipamorelin vs. GHRP-6
Comparison of the three main GHRPs studied for stimulation of growth hormone. Reference data.
| GHRP-2 | Ipamorelin | GHRP-6 | |
|---|---|---|---|
| Category | GHRP (potent) | GHRP (selective) | GHRP (older) |
| GH pulse intensity | High | Moderate | High |
| Cortisol/prolactin | Moderate | Minimal | Higher |
| Effect on appetite | Moderate | Minimal | Marked |
| Status | Research (WADA-prohibited) | Research (WADA-prohibited) | Research (WADA-prohibited) |
Sources: literature on GHRPs and the ghrelin receptor.
Research
Growth hormone stimulation
Clinical and preclinical studies have shown that GHRP-2 causes a strong, dose-dependent release of GH. It has also been investigated as a diagnostic stimulus of pituitary secretory function.
GHRH + GHRP combination
The literature shows that the combination of a GHRH analogue with a GHRP gives a greater GH response than either arm alone — the basis for the study of GHRP-2 together with molecules such as CJC-1295.
Data limitations
Despite the GH-stimulation data, long-term use is not fully characterised and the moderate effect on cortisol/prolactin must be taken into account. GHRP-2 remains a research molecule and is prohibited by WADA.
Note: Scientific reference based on preclinical/clinical data. It is not medical advice or a claim for the product.
In brief — scientific profile
- Synthetic hexapeptide (GHRP) — ghrelin mimetic, GHS-R1a agonist
- Strong GH pulse — among the most active GHRPs
- Moderate effect on cortisol/prolactin/appetite (smaller than GHRP-6)
- Complementary to GHRH analogues — classic GHRH + GHRP stack
- 10 mg form — lyophilised powder of purity > 99%
- Research product — prohibited in sport (WADA)
Side effects and safety
GHRP-2 is generally tolerated, but because of its incomplete selectivity it may have moderate hormonal side effects. The reactions reported are mostly mild.
Common
- Increased appetite
- Injection-site reactions
- Flushing / feeling of warmth
Less common
- Mild rise in cortisol/prolactin
- Fluid retention
- Headache / lethargy
Precautions
- Allergic reaction / hypersensitivity
- Caution regarding the IGF-1 axis (proliferation)
- Caution regarding glucose intolerance
As with any molecule that raises IGF-1, there is a theoretical precaution in states of active malignancy. Scientific reference, not an instruction for use.
Related peptides
Ipamorelin
Selective GHRP (“clean”)
CJC-1295 without DAC
GHRH analogue for the stack
Sermorelin
GHRH analogue (1-29)
Peptide Matrix Water™
Recommended reconstitution solvent
See: All peptides · Blog
Research warning: GHRP-2 is offered exclusively for scientific, research and in vitro purposes. It is not intended for human/veterinary use, diagnosis, treatment or prevention of any condition and is not medical advice. GHRP-2 is prohibited in sport (WADA).
How does it differ from Ipamorelin?
GHRP-2 gives a stronger GH pulse, but with a moderate effect on cortisol, prolactin and appetite. Ipamorelin is “cleaner”/more selective, with minimal such side effects.
Is it combined with GHRH?
Yes. At a different receptor from GHRH analogues ( CJC-1295 , Sermorelin ), the two stimuli additively enhance the GH pulse — the classic GHRH + GHRP stack.
Molecule identity
| CAS number | 158861-67-7 |
|---|---|
| Molecular weight | 818.0 g/mol |
| Molecular formula | C45H55N9O6 |
| Class | Ghrelin analogue (GHS-R1a agonist) |
| Form | Lyophilised powder in a glass vial |
| Storage | Lyophilisate: 2–8 °C, dry and protected from light · after reconstitution: 2–8 °C |
Buy GHRP-2 in Cyprus – price
You can buy GHRP-2 in Cyprus online from Peptology. Prices by strength:
- GHRP-2: €40.00
Orders placed by 15:00 on working days ship the same day and are delivered in 5–7 working days with BOX NOW. Shipping costs €2 and is free from €50; you pay on delivery – by card through the BOX NOW payment link, before you open the locker.
GHRP-2 10 mg: which strength
GHRP-2 is available in: 10 mg.
Research protocols
Important: Reference information for research purposes — not a recommendation for use or medical advice.
In the research literature, GHRPs such as GHRP-2 are administered in regimens synchronised with natural GH secretion:
- It is often studied in one or more administrations per day, because of its short duration of action
- Administration away from meals is studied for optimal GH response
- It is often studied together with a GHRH analogue (classic GHRH + GHRP stack)
It is often combined with CJC-1295 without DAC or Sermorelin. The regimens come from the literature and are not a recommendation for individual use.
Storage and reconstitution
Supplied as a lyophilised powder in a 10 mg vial. Lyophilised, it is stable at room temperature, away from light/moisture. For reconstitution, the recommended solvent is Peptide Matrix Water™, which significantly extends the life of the solution.
- Before reconstitution: room temperature, away from light/moisture; up to 24 months.
- With Peptide Matrix Water™ (recommended): refrigerator 2–8 °C up to 60 days — the best stability option.
- With bacteriostatic water or sterile water: refrigerator 2–8 °C up to 28 days. No re-freezing.
- Reconstitution: add the solvent slowly down the wall, without vigorous agitation.
Laboratory tip: Add Peptide Matrix Water™ to your basket — the recommended stabilising solvent for all reconstituted peptides.
Laboratory protocol — reconstitution, research protocols, storage
Standard protocol, applicable to all research peptides in the Peptology catalogue. For the concentration of the solution (mg/mL) per vial, use the peptide reconstitution calculator.
The 60-second protocol
1. SOLVENT
2. RECONSTITUTION
The solvent is added to the wall of the vial, without agitation, then wait 10–15 minutes.
3. CALCULATION
Calculator → concentration in mg/mL
4. STORAGE
+2 °C to +8 °C, up to 60 days with Peptide Matrix Water
Quick reference
| Parameter | Value |
|---|---|
| Form | Lyophilised powder |
| Solvent | Peptide Matrix Water |
| Volume for reconstitution | 1–3 mL — 3 mL maximum (capacity of the standard vial) |
| Storage before reconstitution | Room temperature, protected from direct light (refrigeration is not mandatory) |
| After reconstitution | Up to 60 days at +2 °C to +8 °C with Peptide Matrix Water |
What you will need
Precision pipette
Calibrated, 100–1000 µL — for accurate measurement of the volume of solvent added to the vial.
70% alcohol pads
Two pads — to disinfect the peptide vial and the solvent vial.
Stabilised solvent for lyophilised peptides. Why this one.
Five rules for reconstitution
| ✅ Correct | ❌ Wrong |
|---|---|
| Disinfect the stoppers and the work surface with 70% alcohol, work with gloves | Working without disinfection |
| The solvent is added slowly down the wall of the vial | Direct jet onto the powder — foaming and denaturation |
| Light swirling between the palms | Shaking — foam, on which the peptides denature |
| Wait 10–15 minutes at room temperature | Mechanical mixing or heating |
| Visual inspection: clear, without particles | Using a cloudy or coloured solution |
Calculating the concentration
⚠️ Maximum 3 mL of solvent. The standard vial does not allow a larger volume — do not exceed it during reconstitution.
- Concentration (mg/mL) = mg in the vial ÷ mL of solvent
- Volume per sample (mL) = amount per sample (mg) ÷ concentration (mg/mL)
- 1 mg/mL = 1 µg/µL · 1 mL = 1000 µL
Reconstitution per vial — solvent: Peptide Matrix Water. Concentration after addition (1 mg/mL = 1 µg/µL):
| Vial | + 1 mL | + 2 mL | + 3 mL |
|---|---|---|---|
| 10 mg | 10 mg/mL | 5 mg/mL | 3.33 mg/mL |
👉 For any vial and solvent volume — use the calculator. It calculates the concentration (mg/mL, µg/µL) and the volume per sample (mL, µL).
Storage
BEFORE RECONSTITUTION
Room temperature, protected from direct light, in the original packaging. Refrigeration is not mandatory.
AFTER RECONSTITUTION
+2 °C to +8 °C, up to 60 days with Peptide Matrix Water. Discard the remainder after this period.
FREEZING
Not recommended. Freeze/thaw cycles degrade the structure of the peptide.
Four mistakes to avoid
1. Shaking for “faster dissolution”
Foam = denaturation. Only gentle swirling between the palms.
2. Unsuitable solvent
For the stability of the peptide structure, use only a sterile, purpose-designed solvent — Peptide Matrix Water is recommended.
3. Ignoring slight cloudiness
If it is not completely clear = the sample does not meet the criteria for work.
4. Removing it from the refrigerator “for an hour or two”
Short exposures add up and jeopardise stability.
Research status: All Peptology products are intended exclusively for laboratory use and research. They are not pharmaceutical products, have not been approved for human or veterinary use and do not replace medical advice. The protocol described is standard laboratory practice for working with lyophilised peptides.
How is it stored?
The lyophilised vial is stored at room temperature, away from light. After reconstitution: with Peptide Matrix Water™ — up to 60 days at 2–8 °C; with bacteriostatic water — up to 28 days.
Purity and certificate of analysis
99%+ purity, HPLC/MS certificate for every batch.
GHRP-2 - 10 mg – Batch - 0226 - Purity
Shipping and payment
Orders placed by 15:00 on working days ship the same day and are delivered in 5–7 working days with BOX NOW. Shipping costs €2 and is free from €50; you pay on delivery – by card through the BOX NOW payment link, before you open the locker.
🚚 Delivery information
- Orders placed by 15:00 are dispatched the same day, delivery in 5–7 working days.
-
Shipping with BOX NOW, chosen at checkout. Free shipping from €50, otherwise €2.
Frequently asked questions about GHRP-2
Where can I buy GHRP-2 in Cyprus and what does it cost?
In Cyprus you can buy GHRP-2 online from Peptology, from €40.00. Delivery in 5–7 working days with BOX NOW, free from €50; you pay on delivery – by card through the BOX NOW payment link, before you open the locker.
What is GHRP-2?
It is a synthetic hexapeptide of the GHRP class, a ghrelin mimetic (GHS-R1a agonist). It strongly stimulates the pituitary to secrete growth hormone.
In what form is GHRP-2 available?
As a lyophilised powder in a glass vial (10 mg). It is reconstituted in the laboratory with Peptide Matrix Water™ or bacteriostatic water; you can work out the concentration (mg/mL) with the <a href="/page/peptide-calculator">reconstitution calculator</a>.
Which side effects have been reported in clinical studies of GHRP-2?
GHRP-2 is generally tolerated, but because of its incomplete selectivity it may have moderate hormonal side effects. The reactions reported are mostly mild.
How long does delivery take and how do I pay?
Orders placed by 15:00 on working days ship the same day and are delivered in 5–7 working days with BOX NOW. Shipping costs €2 and is free from €50; you pay on delivery – by card through the BOX NOW payment link, before you open the locker.