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Vitamins B1, B6, and B12 are of special importance for the metabolism in the peripheral and central nervous system

132 Another controlled trial that included 120 subjects with tinnitus and low cochlear blood flow related to Mnire disease found 150 mg of Pycnogenol per day for six months improved cochlear blood flow and reduced subjective measures of tinnitus compared with no treatment

Athletes often use it to: Improve muscle recovery and flexibility Speed up tissue repair Reduce inflammation in joints and connective tissue Benefits for Athletes Together, BPC-157 and TB-500 have become popular among athletes for their synergistic effects

This may be due to copper's ability to enhance the expression of metalloproteinases (MMPs).16 MMPs normally regulate the degradation of collagen, and a specific one, MMP-1, may be responsible for the initiation of collagen fragmentation.17 Supporting this, a 2024 study noted that elevated MMP-1 levels appear to contribute to aging skin and that higher MMP-1 levels in mice led to:18 The loss and fragmentation of dermal collagen fibrils Contracted fibroblast morphology Reduced collagen production Increased expression of pro-inflammatory mediators Additionally, a 2016 study found that GHK-Cu significantly increased gene expression of MMP-1 and MMP-2 at the lowest concentration, which the studys authors considered to be one of the reasons the peptide was able to increase collagen and elastin production.19 So, what this could ultimately mean is that using too much GHK-Cu (or other copper peptides) may in theory increase the skins MMP-1 concentration above the levels involved in healthy collagen production, taking it into the collagen fragmentation and breakdown territory seen in older skin with naturally higher MMP-1 levels