It is not approved by the FDA or any regulatory authority for human use, and safety and efficacy in humans have not been established outside of any structured clinical trials referenced
Actin Regulation and Systemic Cell Migration Conversely, TB-500, derived from a naturally occurring fragment of Thymosin Beta-4, is heavily studied for its dynamic role in cell migration, actin regulation, and systemic tissue remodeling pathways
References Ng, F
A 2007 Seoul National University study showed GHK-Cu stimulated follicle elongation and dermal papilla cell proliferation at concentrations as low as 10^-12 M (Pyo et al., 2007)
For systemic studies, the subjects weight is a crucial factor, with dosages often calculated per kilogram of body weight
Dosing instructions, side effect information, and dietary guidance provided