GHRP-2 vs LL-37
Well Studied vs Well Studied
synergistic Mechanism-based · 47% GHRP-2 and LL-37 work through complementary pathways. Growth hormone signaling supports tissue repair processes. A well-established combination in recovery protocols.
Molecular Data
GHRP-2 LL-37
Weight 817.9 Da —
Half-life ~30 minutes Short (rapid proteolytic degradation)
Chain 6 amino acids 37 amino acids
Type Synthetic hexapeptide Cationic antimicrobial peptide
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
LL-37
01 Direct wound healing acceleration
02 Broad-spectrum antimicrobial activity
03 Activity against resistant bacteria (MRSA, MDRPA)
04 Enhanced tissue regeneration
05 Immune modulation
06 Local antimicrobial protection
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
LL-37
0.5-1.6 mg/mL topical gel or 100-150 mcg injectable / Topical: Daily to twice weekly on wounds. Injectable: Once daily subcutaneous
Systemic immune support 100-150mcg 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
LL-37
Generally well-tolerated
Mild injection site reactions (injectable)
Local irritation at application site (topical)
Contraindications
Active cancer or history of cancer
Pregnancy or breastfeeding
Pituitary disorders
Diabetic retinopathy
WADA prohibited for competitive athletes
Pre-existing hypersensitivity to peptides
Compromised immune status (relative contraindication)
Non-sterile wound environments
Research Evidence
GHRP-2 LL-37
Status Well Studied Well Studied
References 3 studies 4 studies
Latest — 2025
FDA Approved No No
This comparison is for educational and research purposes only. Consult a healthcare professional before use.