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"Stimulation of collagen synthesis in fibroblast cultures by the tripeptide-copper complex glycyl-L-histidyl-L-lysine-Cu2+." FEBS Letters
Nature 571(7764):198204
However, by consuming various B12 sources you can achieve the recommended daily intake without trouble
B12 therapy may support individuals experiencing fatigue, low energy, poor dietary intake, absorption issues, or nutritional imbalance
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