does glutathione feed cancer cells Involvement of peroxidases in the occurrence and development of breast cancers | Journal of Translational Medicine Glutathione is critical for NK

The absence of direct comparative data means that claims of superiority for any one peptide over another are not supported by current evidence

Preclinical studies suggest it modulates nitric oxide pathways and growth-factor expression to promote angiogenesis and collagen deposition in damaged tissues [1] [3]

You still use the same amount of GHK-Cu

One study indicated that BPC 157 increased blood vessel formation and vascular endothelial growth factor receptor 2 (VEGFR2) expression, helping bypass blockages in damaged vessels

Essentially vitamin B12 is a by-product of fermentation by certain bacteria commonly found in soil or the digestive tract of animals (10)