Talk to your doctor about your nitrous oxide misuse so they can give you the right recommendations
When B12 injections are needed We derive B12 from foods like eggs, meats, fish, dairy, nutritional yeast, and fortified foods, which means vegetarians are likely to need a supplemental form of this nutrient
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However, under certain conditions, in the presence of free (unbound) redox metals, such as iron or copper, resulting from metal dyshomeostasis, vitamin C may exhibit prooxidant properties Prooxidant properties of vitamin C in the presence of redox-active metal ions and oxygen have been confirmed predominantly under in vitro conditions, occurrence under in vivo conditions has not been convincingly documented (Halliwell 1996)