LL-37 vs Sermorelin
Well Studied vs Well Studied
synergistic Mechanism-based · 47% LL-37 and Sermorelin work through complementary pathways. Growth hormone signaling supports tissue repair processes. A well-established combination in recovery protocols.
Molecular Data
LL-37 Sermorelin
Weight — 3,358 Da
Half-life Short (rapid proteolytic degradation) 10-12 minutes
Chain 37 amino acids 29 amino acids
Type Cationic antimicrobial peptide GHRH analog
Key Benefits
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
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
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
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
LL-37
Generally well-tolerated
Mild injection site reactions (injectable)
Local irritation at application site (topical)
Sermorelin
Injection site reactions (16.7% of patients - generally mild)
Nasal irritation (intranasal route)
Contraindications
Pre-existing hypersensitivity to peptides
Compromised immune status (relative contraindication)
Non-sterile wound environments
Active malignancy
Pituitary tumors
Pregnancy
Research Evidence
LL-37 Sermorelin
Status Well Studied Well Studied
References 4 studies 5 studies
Latest 2025 November 2024
FDA Approved No No
This comparison is for educational and research purposes only. Consult a healthcare professional before use.