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Some researchers suggest alternating nights for GHK-Cu and retinoids, or using them at different times of the day, to prevent potential irritation or reduce the efficacy of certain compounds
Research Context BPC-157 (Body Protection Compound 157) is a synthetic pentadecapeptide corresponding to a 15-amino-acid partial sequence (residues 14 to 28) of a larger gastroprotective protein identified in human gastric juice

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