BPC-157 is a synthetic pentadecapeptide studied in preclinical models for its regenerative effects on musculoskeletal tissues, tendons, ligaments, and the gastrointestinal tract. It promotes angiogenesis and tissue repair in laboratory research.

GHK-Cu is a naturally occurring copper-binding tripeptide researched for its roles in tissue remodeling, wound healing, collagen stimulation, and antioxidant activity in laboratory models.