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This creates a theoretical concern that copper peptides might accelerate tumor development in individuals with active cancer or dormant tumors

counteraction by BPC 157 or L-arginine

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The key difference may be that endurance athletes more acutely feel the effects of suboptimal B12 levels during long training sessions

Vitamin B12 injections help out those who have a vitamin B12 deficiency

Quality control considerations for the KLOW formulation include verification of individual peptide purity and identity, assessment of copper content and coordination in the GHK-Cu component, evaluation of peptide stability under storage conditions, and confirmation of biological activity for each component