The research literature focuses overwhelmingly on GHK-Cu because it's the form found naturally in human tissue
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Zarei A et al
In preclinical and in vitro research, GHK-Cu has demonstrated a range of biological activities, including modulation of inflammatory cytokines and influence on cellular signalling pathways
Some of the most robust studies and methodologies were those that investigated the potential mechanisms surrounding the healing effects of BPC 157
50%) in GSH levels compared with normal control subjects. Nonalcoholic Fatty Liver Disease (NAFLD) An open-label, single-arm, pilot trial showed that ALT levels, triglycerides, non-esterified fatty acids, and ferritin levels significantly decreased after GSH treatment