
Vendors market this blend around three complementary mechanisms: GHK-Cu for collagen synthesis and antioxidant/skin-remodeling signaling; BPC-157 for gastrointestinal-protective and soft-tissue repair effects via nitric-oxide and growth-factor pathways; and TB-500 for cell migration and blood-vessel formation via its actin-binding activity. These claims come almost entirely from in vitro and animal studies.