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GHK-Cu also stimulates both collagen synthesis and matrix metalloproteinases that break collagen down, so unbalanced or excessive use could in principle disrupt extracellular-matrix homeostasis
But are they safe
Die Pharmazie (2019) 74(1):37
Gut Health: Since the compound originates from the gastrointestinal tract, some use it to address conditions like leaky gut or inflammatory bowel issues
This is especially true if you are taking medication for liver-related issues or have a diagnosed medical condition
Athletes focus on the compound for its ability to heal underlying damage rather than building raw volume
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