Alpha-Defensin vs GHK-Cu (Copper Peptide)

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

Alpha-Defensin

Alpha-defensins are small cationic peptides that are key components of the innate immune system. They have broad-spectrum antimicrobial activity against bacteria, fungi, and some viruses.

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GHK-Cu (Copper Peptide)

GHK-Cu is a naturally occurring copper peptide found in human plasma, saliva, and urine. It plays important roles in wound healing, tissue repair, and has shown anti-aging properties in research.

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Side-by-Side Comparison

Aspect	Alpha-Defensin	GHK-Cu (Copper Peptide)
Dose Range	100 mcg–500 mcg	1 mg–2 mg
Frequency	1x daily	1x daily
Cycle Length	2–4 weeks	4–8 weeks
Route	subcutaneous	subcutaneous
Mechanism	Insert into microbial membranes to form pores, leading to cell death. Also have immunomodulatory effects including chemotaxis of immune cells and cytokine modulation.	Attracts immune cells and fibroblasts to wound sites, stimulates collagen and glycosaminoglycan synthesis, promotes angiogenesis, and has antioxidant effects. Modulates gene expression related to tissue repair.
Typical Dosage	Research compound - dosing varies by application. Typically studied in laboratory and early clinical research settings rather than for general use.	Topical: Applied as serum or cream 1-2 times daily. Injectable: 1-2mg daily for research purposes. Microneedling protocols often use 0.5-1%.
Administration	Various routes studied including topical, local injection, and systemic administration depending on application.	Most commonly used topically for skin applications. Can be injected subcutaneously for systemic effects. Often combined with microneedling for enhanced skin penetration.
Side Effects	Limited human use data. May cause local inflammation. Potential for immune activation effects.	Topical use is generally well-tolerated. May cause temporary skin irritation or redness in sensitive individuals. Injectable use may cause injection site reactions.
Best For	Recovery & Healing Immune Support	Recovery & Healing