how long does it take melanotan 1 to work II (“Tan Jabs”): Why They're Not Worth The Risk Peptides: Doctors explain the benefits,

Here is a table summarizing the different C-rates and their corresponding discharge times: How to Calculate the C Rating of a LiPo Battery

GHK-Cu peptide has a role in age-related neurodegeneration

(2) The peptide has been suggested to exhibit action similar to Epithalamin via various modes

J., Subramanyan, K., Misra, M., & Meyer, F

Individuals seeking support for muscle growth, fat loss, recovery, or overall anti-aging benefits may be good candidates

So the synergy argument is mechanistic extrapolation supported by class-level research: stronger than the reasoning behind many peptide stacks, but still not a trial of these two compounds together, and it is honest to say so