It works by stimulating the pituitary gland to release growth hormone
Overview of Intestinal Mucosal Structure and Barrier Function The intestinal mucosal surface is an essential portal of entry of nutrients, ions, and fluids into the body that is comprised of multiple epithelial cell types serving diverse functions, connected by intercellular junctions, a luminal layer composed of glycocalyx, secreted mucus, water, and ions, and a subepithelial layer comprised of subepithelial nerves, vessels, immune cells, and lymphatics
Most of the research right now is preclinical with some early clinical data, so clinicians and patients should consider GHK-Cu a hopeful adjunct, not a sure bet therapy
References: Bevir, M
Measures of general nutritional status indicated that the association of increased homocysteine levels and diminished vitamin B 12 status with Alzheimer's disease was not due to dementia-related malnutrition (70)