Educational guide
GHRP-2 Overview, Dosing & Safety | Peptide Database
GHRP-2 (Pralmorelin) Growth Hormone Releasing Peptide-2 | Pralmorelin Community Research Join others researching GHRP-2 — share findings, ask questions, and learn from real experiences GHRP-2 is a synthetic growth hormone secretagogue that stimulates the pitui
This guide cannot diagnose a condition or recommend a personal treatment plan. Discuss medical questions with a qualified professional.
GHRP-2 (Pralmorelin)
Growth Hormone Releasing Peptide-2 | Pralmorelin
Community Research
Join others researching GHRP-2 — share findings, ask questions, and learn from real experiences
GHRP-2 is a synthetic growth hormone secretagogue that stimulates the pituitary gland to release growth hormone. It is one of the most potent members of the GHRP family, being 2-3 times more effective than GHRP-6 in stimulating GH release. Originally developed as a diagnostic agent for growth hormone deficiency, it works by mimicking ghrelin and binding to the GHS-R1a receptor.
GHRP-2 acts as a synthetic agonist of ghrelin, binding to the growth hormone secretagogue receptor (GHS-R1a) in the hypothalamus and pituitary. This stimulates cAMP production and promotes pulsatile release of endogenous growth hormone without suppressing natural feedback loops. It works synergistically with GHRH to amplify GH secretion beyond what either peptide achieves alone.
Molecular Data
D
Position 1
Alanine
Position 2
Position 3
2Nal
Position 4
Position 5
Tryptophan
Position 6
Position 7
Phenylalanine
Position 8
Lysine
Position 9
NH2
Position 10
Research Indications
Used as a diagnostic agent in Japan for assessing growth hormone deficiency in clinical settings.
Stimulates endogenous growth hormone release through ghrelin receptor activation.
Indirectly increases IGF-1 levels through enhanced GH secretion.
Enhanced muscle protein synthesis through elevated growth hormone and IGF-1 levels.
Improved lipolysis and body composition through GH-mediated fat oxidation.
Faster recovery from exercise and improved sleep quality.
Myoprotective effects in muscle atrophy models through GHS-R1a stimulation.
Cytoprotective effects observed in cardiac tissue research.
Dosing Protocols
Subcutaneous injection is the primary administration route. Best administered on an empty stomach for optimal GH release. Multiple daily doses recommended to maintain elevated GH levels.
GH optimization
100-150 mcg
2-3x daily
SubQ
Enhanced results
200-300 mcg
With GHRH (synergy)
100 mcg each
SubQ (combined)
Pre-sleep protocol
100-200 mcg
Before bed
Reconstitution Instructions
Bacteriostatic water (BAC)
Insulin syringes (0.5-1 mL)
Alcohol swabs
Peptide vial
Sterile work surface
1 Clean work area and hands thoroughly
2 Calculate required BAC water volume
3 Draw BAC water into syringe
4 Inject slowly down vial side (not directly onto powder)
5 Gently swirl until dissolved (never shake)
6 Store in refrigerator, use within 28 days
Interactions
What to Expect
Side Effects & Safety
Common Side Effects
Increased appetite (less than GHRP-6)
Mild water retention
Tingling or numbness in extremities
Tiredness or lethargy after injection
Mild headache
Stop Signs - Discontinue if:
Severe or persistent headaches
Unusual swelling in hands or feet
Signs of carpal tunnel syndrome
Allergic reactions
Contraindications
Active cancer or history of cancer
Pregnancy or breastfeeding
Pituitary disorders
Diabetic retinopathy
WADA prohibited for competitive athletes
Quality Checklist
Good Signs
White to off-white lyophilized powder
Clear solution after reconstitution
Intact vacuum seal on vial
Warning Signs
Slight clumping that dissolves easily
Bad Signs
Discolored or yellow powder
Cloudy solution after reconstitution
Particles or precipitates in solution
Frequently Asked Questions
Is GHRP-2 stronger than GHRP-6 for stimulating growth hormone?
Yes, GHRP-2 is 2-3 times more potent than GHRP-6 at stimulating GH release. However, GHRP-2 causes less appetite stimulation than GHRP-6, making it more tolerable for those sensitive to hunger effects. The trade-off is strength versus side effects—GHRP-2 is more powerful with fewer appetite issues.
How much should I dose GHRP-2 with an empty stomach requirement?
Standard GHRP-2 dosing is 100-300mcg, 2-3 times daily on a completely empty stomach (2+ hours after eating). Wait 30 minutes after injection before consuming food to optimize GH release. Best timing is morning upon waking, post-workout, and bedtime when natural GH is already elevated.
Will GHRP-2 cause elevated cortisol like some sources suggest?
At recommended doses (100-300mcg), GHRP-2 rarely elevates cortisol significantly. However, very high doses (>300mcg) or frequent dosing can increase cortisol. Most side effects are manageable water retention and appetite, with cortisol elevation primarily a concern with dose escalation beyond therapeutic ranges.
Can I use GHRP-2 if I'm diabetic or glucose-sensitive?
GHRP-2 can modestly affect glucose metabolism through GH's insulin-antagonistic effects. Diabetic users require careful monitoring and possible insulin adjustment. For glucose-sensitive individuals, monitor blood sugar before, during, and after use. Medical supervision is recommended, particularly with insulin-dependent diabetes.
References
GHRP-2 infusion increased food intake by 35.9% compared to saline, demonstrating ghrelin-like orexigenic effects.
GHRPs including GHRP-2 demonstrated significant cytoprotective effects in cardiac and extracardiac tissues.
Chronic GHRP-2 administration increased average daily gain by 22.35% and feed efficiency by 20.64%.
Related Peptides
Both are GHRPs; can be alternated but typically not stacked together.
Similar mechanism; GHRP-2 is more potent with less appetite stimulation.
No known negative interactions; different mechanisms.
Disclaimer
This information is for educational and research purposes only. Consult a healthcare professional before use.