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Only testing can tell you the answer, but a daily B12 injection schedule should be your starting point
GHK-Cu (100 mg) GHK-Cu is a naturally occurring copper-peptide complex formed from the tripeptide glycyl-L-histidyl-L-lysine bound to a copper (II) ion
If using both in the same routine, wait 15 to 20 minutes between applications
Your physician will determine the optimal approach based on your specific needs and objectives
Oral is unproven and likely less effective
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