GHRP-2 vs Sermorelin
Well Studied vs Well Studied
synergistic Combined GHRH+GHRP-2 produces 54-fold GH increases compared to 20-fold with GHRH alone.
Molecular Data
GHRP-2 Sermorelin
Weight 817.9 Da 3,358 Da
Half-life ~30 minutes 10-12 minutes
Chain 6 amino acids 29 amino acids
Type Synthetic hexapeptide GHRH analog
Key Benefits
GHRP-2
01 Potent stimulation of natural growth hormone release
02 Enhanced muscle growth and recovery
03 Improved body composition and fat metabolism
04 Better sleep quality and recovery
05 Increased appetite (can be beneficial for bulking)
06 Maintains natural GH pulsatile release patterns
07 Synergistic effects when combined with GHRH peptides
Sermorelin
01 FDA-proven efficacy
02 Maintains natural GH pulsatile patterns
03 Preserves pituitary function
04 1.26kg lean mass increase documented in elderly
05 IGF-1 mediated anabolic effects
06 Allows natural feedback regulation
Dosing Protocols
GHRP-2
100-300 mcg / 2-3x daily
GH optimization 100-150 mcg 2-3x daily
Enhanced results 200-300 mcg 2-3x daily
With GHRH (synergy) 100 mcg each 2-3x daily
Pre-sleep protocol 100-200 mcg Before bed
Sermorelin
200-300mcg per dose (up to 500mcg for athletic performance) / Once daily at bedtime (aligns with natural GH pulse)
Anti-aging/Longevity 200-300mcg Once at bedtime
Athletic Performance 300-500mcg Once at bedtime
Body Composition 200mcg 5 days weekly
Combination Therapy 200mcg + GHRP Once daily
Side Effects
GHRP-2
Increased appetite (less than GHRP-6)
Mild water retention
Tingling or numbness in extremities
Tiredness or lethargy after injection
Mild headache
Sermorelin
Injection site reactions (16.7% of patients - generally mild)
Nasal irritation (intranasal route)
Contraindications
Active cancer or history of cancer
Pregnancy or breastfeeding
Pituitary disorders
Diabetic retinopathy
WADA prohibited for competitive athletes
Active malignancy
Pituitary tumors
Pregnancy
Research Evidence
GHRP-2 Sermorelin
Status Well Studied Well Studied
References 3 studies 5 studies
FDA Approved No No
This comparison is for educational and research purposes only. Consult a healthcare professional before use.