BPC-157 vs LL-37 (Cathelicidin)

A detailed comparison to help you understand the differences and choose the right peptide for your research goals.

BPC-157

Body Protection Compound-157 is a synthetic peptide derived from a protein found in human gastric juice. It has shown remarkable healing properties in research studies.

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LL-37 (Cathelicidin)

LL-37 is the only human cathelicidin antimicrobial peptide. It plays crucial roles in innate immunity and has shown diverse biological activities including antimicrobial, immunomodulatory, and wound healing properties.

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Side-by-Side Comparison

Aspect	BPC-157	LL-37 (Cathelicidin)
Dose Range	250 mcg–500 mcg	500 mcg–1.6 mg
Frequency	2x daily	1x daily
Cycle Length	4–6 weeks	2–4 weeks
Route	subcutaneous	topical
Mechanism	BPC-157 works through multiple pathways including upregulation of growth factor expression, nitric oxide system modulation, and promotion of angiogenesis. It enhances tendon-to-bone healing and supports the formation of new blood vessels.	Disrupts bacterial membranes, neutralizes endotoxins, modulates immune cell function, and promotes wound healing. Has both direct antimicrobial and immunomodulatory effects.
Typical Dosage	Typical research dosages range from 250-500mcg administered 1-2 times daily. Both subcutaneous and oral administration have been studied.	Research protocols vary widely. Typical ranges: 50-200mcg administered subcutaneously 2-3 times weekly. Some protocols use higher doses for acute infections.
Administration	Can be administered subcutaneously near the injury site or systemically. Stable in gastric juice, making oral administration viable.	Subcutaneous injection. Can cause significant injection site reactions. Often used in conjunction with other immune-supporting protocols.
Side Effects	Generally well-tolerated in research. Some reports of mild nausea or dizziness at higher doses.	Injection site pain and reactions are common. May cause flu-like symptoms, temporary fatigue, or immune activation responses.
Best For	Muscle Growth Recovery & Healing	Recovery & Healing