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In a study published in the Journal of Orthopaedic Research (Staresinic et al., 2003), BPC-157 accelerated Achilles tendon healing in rats by approximately 72%, with biomechanical testing showing significantly greater tensile strength in treated tendons versus controls (N=72 rats, measured at 14 and 28 days)

The strongest, most consistent human data for Ipamorelin remain limited, and much of the timeline reasoning is extrapolated from GH physiology rather than large Ipamorelin-specific trials

Inflammation The immune response worsens skin damage, resulting in painful, persistent acne lesions

Vitamin C requires a low, acidic pH to penetrate the skin, which can destabilize the GHK-Cu peptide and reduce the effectiveness of both products

Kraaijeveld, K