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The copper ion can oxidize vitamin C, reducing its effectiveness

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Reduce if you have experienced a medical event, surgery, or illness that has compromised your baseline state

Abbreviations Fe: Ferrum g: Gram GFR: Glomerular filtration rate GGT: Gamma-glutamyl transpeptidase GOT: Glutamic oxaloacetic transaminase GP: General practitioner GPT: Glutamic-pyruvic transaminase HIV: Human immunodeficiency virus HVB: Hepatitis B virus HVC: Hepatitis C virus IF: Intrinsic factor g: Microgram MMA: Methylmalonic acid mg: Milligrams ng: Nanograms pg: Picograms

You have written often about vitamin B12 deficiency, but I can find nothing about too much B12