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ghk-cu side effects research The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline GHK-Cu Peptides Before and After:
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For athletes and bodybuilders, that is the real comparison: not only TB-500 vs BPC-157, but smart recovery vs repeating the same injury

No special precautions needed beyond basic refrigeration between uses

However, caution is advised regarding prolonged use without breaks, and potential users should carefully consider sourcing and consultation with medical professionals 6

10.1172/JCI62236 J Clin Invest
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No dependence on the dosage or age of the rats was seen
