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Once you exceed what your transporters can handle, you simply excrete the excess in your urine
Raps SP, Lai JC, Hertz L, Cooper AJ
Last Updated: March 31, 2026 | Reading Time: Approximately 10 minutes | Author: Palmetto Peptides Research Team Quick Answer GHK-Cu is more stable than many research peptides when stored correctly, but its copper-binding chemistry introduces degradation considerations that do not apply to unbound peptides
However, some people may experience mild side effects such as an upset stomach or bloating
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