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GHK-Cu vs BPC-157
Tissue RepairGHK-Cu and BPC-157 both promote healing but target different tissue types. GHK-Cu (copper tripeptide) excels at skin rejuvenation, collagen remodeling, and cosmetic anti-aging — it's the go-to for dermal applications. BPC-157 targets deeper tissues: gut lining, tendons, ligaments, and nerves. GHK-Cu works partly through copper ion delivery and gene expression modulation, while BPC-157 works through nitric oxide and growth factor pathways.
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Side-by-Side Comparison
| Aspect | GHK-Cu | BPC-157 |
|---|---|---|
| dosing | Topical: 1-2% cream/serum daily. Injectable: 1-3 mg SubQ 1x daily | 250-500 mcg SubQ 1-2x daily near injury site |
| best for | Skin anti-aging, wound healing, hair follicle health, collagen synthesis, scar reduction | Gut healing, tendon/ligament repair, nerve regeneration, muscle injuries, organ protection |
| stacking | Complementary stack for comprehensive healing. GHK-Cu handles surface/dermal repair while BPC-157 heals deeper structures. Common in the 'GLOW' protocol alongside TB-500. | — |
| mechanism | Copper ion delivery, gene expression modulation (upregulates collagen, decorin, DNA repair genes), attracts immune cells to wounds | Nitric oxide modulation, VEGF/FGF upregulation, anti-inflammatory via multiple pathways |
| fda status | Not FDA-approved as drug; widely used in cosmetic formulations | Not FDA-approved; research peptide |
| side effects | Topical: minimal. Injectable: possible injection site reactions, copper sensitivity | Minimal — occasional nausea, dizziness at high doses |
| administration | Topical (most common for skin), SubQ injection (systemic) | SubQ injection (most common), oral (for gut issues) |
Verdict
GHK-Cu for skin, cosmetic, and surface healing. BPC-157 for internal tissues, gut, tendons, and nerves. They work on different tissue layers and stack well together.