zinc and ghk cu Zinc/copper supplement w/GHK : r/Biohackers GHK-Cu Topical Spray - Wells

Anything that is injected through the skin, that travels to and is released into the muscle, can result in your body retaliating and building an antibody or allergy to whatever substances were injected, such as B12

doi: 10.1186/s13075-020-2103-8

GHK-Cu primarily supports tissue repair, collagen production, and visible skin rejuvenation, whereas Epithalon works deeperpromoting cellular longevity, telomere support, and optimized biological aging

It would be interesting to see if a longer time interval between vaccinations than the 3 weeks employed in this study changes the magnitude and type of immune response generated, as it does when reboosting with Ad/MVA encoding HCV antigens [150]