Side-by-side comparison of mechanisms, dosing, interactions, and stacking potential.
| BPC-157 | GHK-Cu | |
|---|---|---|
| Category | Peptides | Growth Factors |
| Standard Dose | Research indicates 250-500 mcg administered 1-2 times daily via subcutaneous injection near the site of injury. | Research indicates 1-2 mg daily via subcutaneous injection, or topical application at 1-3% concentration in cream/serum. |
| Timing | Administer on an empty stomach or near the injury site. No strict meal timing required, though fasted state may improve absorption for oral dosing. | Evening administration preferred for skin rejuvenation (aligns with nocturnal repair cycles). Topical can be applied morning and evening. |
| Cycle Duration | Typical cycles range from 4-12 weeks depending on the injury being addressed. | 8-12 weeks for injectable cycles. Topical use can be ongoing. |
| Evidence Level | animal_plus_anecdotal | moderate_human |
BPC-157 is a 15-amino acid peptide derived from human gastric juice that promotes angiogenesis via dual VEGFR2-dependent (PI3K-Akt-eNOS) and VEGF-independent (Src-Caveolin-1-eNOS) nitric oxide pathways. It upregulates growth hormone receptor expression, modulates the FAK-paxillin pathway for cell migration, and counteracts damage to the nitric oxide system. Additionally, it enhances tendon fibroblast growth, promotes reticulin and collagen formation, and accelerates wound healing by mediating the NO system's protective functions.
Research indicates 250-500 mcg administered 1-2 times daily via subcutaneous injection near the site of injury.
Administer on an empty stomach or near the injury site. No strict meal timing required, though fasted state may improve absorption for oral dosing.
Typical cycles range from 4-12 weeks depending on the injury being addressed.
GHK-Cu is a naturally occurring copper-binding tripeptide (glycyl-L-histidyl-L-lysine) that modulates gene expression affecting 31.2% of human genes. It activates Wnt/beta-catenin signaling for hair follicle growth, stimulates TGF-beta pathway for tissue remodeling, and promotes collagen and glycosaminoglycan synthesis while modulating metalloproteinase activity. The copper ion serves as a cofactor for enzymes essential to wound healing including superoxide dismutase and lysyl oxidase.
Research indicates 1-2 mg daily via subcutaneous injection, or topical application at 1-3% concentration in cream/serum.
Evening administration preferred for skin rejuvenation (aligns with nocturnal repair cycles). Topical can be applied morning and evening.
8-12 weeks for injectable cycles. Topical use can be ongoing.
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