BPC-157 vs GHK-Cu (injectable)

A synthetic 15-amino-acid pentadecapeptide derived from a protein in human gastric juice, widely researched for its effects on soft tissue healing, tendon repair, and gut integrity.

A naturally occurring copper tripeptide that activates over 4,000 genes involved in tissue remodelling and wound healing. Injectable form is used for systemic repair; topical form dominates cosmetics.

BPC-157 appears to upregulate growth hormone receptor expression, promote angiogenesis through VEGF pathways, and accelerate collagen reorganisation in damaged tissue. Animal models show effects on ligament, tendon, muscle, bone, and gastric mucosa repair.

GHK-Cu binds copper ions and enters cells via copper-transport pathways. It modulates expression of genes governing collagen synthesis, angiogenesis, antioxidant defence, and skin-barrier repair.

250–500 mcg per day (research protocols)

1–3 mg subcutaneous, 3–5x per week

~4 hours (parenteral)

~1 hour (but downstream gene effects persist)

Subcutaneous, Intramuscular, Oral (stable form)

Subcutaneous, Topical

research-only

research-only

£16 · £3.2/mg via Peptides UK

£80 · £1.6/mg via My-Peptides