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A close analogue of GHK-Cu (differing by a single N-terminal methyl group), it is provided as a lyophilized powder with 99% HPLC purity, MS confirmation, and a third-party Janoshik COA

Rapid discrimination of visual and multisensory memories revealed by electrical neuroimaging

If you've had a BAD experience with B12 shots, it's most likely that you do not tolerate or convert cyanocobalamin well (see if you can verify what form of B12 was in the shot that made you react poorly, and then stay away from that specific form if you can)

Furthermore, it fights ageing and improves overall skin health at the same time

doi: 10.1016/j.biopha.2023.115503 8 ArcielloM.CapoC