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Journal of Agricultural and Food Chemistry
GHK (glycyl-L-histidyl-L-lysine) naturally occurs in human plasma at approximately 200 ng/mL in young adults, declining with age 14
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Daily Protocol: 1 to 2 mg subcutaneous injection once daily Alternate Protocol: 2 to 3 mg subcutaneous injection three times weekly Cycle Length: 8 to 12 weeks on Rest Period: 4 to 6 weeks off between cycles Cycles Per Year: 2 to 3 cycles recommended Injection Sites: Abdomen, outer thigh, or upper arm with rotation Cycling Recommendations Research suggests running GHK-Cu in cycles of 8 to 12 weeks followed by rest periods of 4 to 6 weeks
