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The main difference in GHK-Cu vs BPC-157 is that GHK-Cu is more often associated with collagen and skin regeneration pathways, while BPC-157 is more often associated with tendon, ligament, muscle, gut, and systemic recovery pathways

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TFA Removal: Processed via acetate exchange to remove inflammatory trifluoroacetic acid salts, ensuring high viability in sensitive cell culture applications

Thats not a foolproof guarantee that the peptide will be pure (and free of contaminants like heavy metals), but its better than taking your chances with companies that dont do third-party testing