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Other copper-peptide complexes exist in research literature, but GHK-Cu is the one most closely associated with the term because it was the first to be isolated and remains the most widely referenced in copper-peptide research
Many people struggle here due to low stomach acid, gastrointestinal conditions, certain medications, or age-related changes
S15A, S15B)
This form is well-absorbed and more stable throughout the digestive tract than other forms of glutathione supplements
doi: 10.1111/j.1365-2605.2005.00598.x 31 DuttaSSenguptaPRoychoudhurySChakravarthiSWangCWSlamaP
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