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The most commonly used alongside BPC-157 are TB-500 and GHK-Cu

The treatment group receiving the GHK-based complex showed a statistically significant increase in hair count over 6 months compared to placebo 71.5 additional hairs in the treatment group versus 9.6 in the placebo group (Choi et al., 2016)

broader NO-system interplay summarized in review (Sikiric 2014)

GHK-Cu has also been linked to several other processes that support tissue creation and has been found to: Stimulate the synthesis of collagen in skin cells [3] Increase the accumulation of protein [3] Increase synthesis of decorin [4] Stimulate the synthesis of metalloproteinases Suppress the production of the inflammatory cytokine interleukin-6 [2] Stimulate antioxidant gene activity [2] Essentially, GHK-Cu is believed to help the body break down old tissue, repair DNA, and create new, healthier tissue

This finding contrasts with the results of the in vivo studies mentioned above, which may due to several reasons