This is to quickly increase vitamin B12 levels
And it means cutting back pretty significantly on nuts, which can be a pretty high source of omega-6, and then poultry and pork, especially if they are factory farm poultry and pork
Foods such as avocados, spinach, asparagus, broccoli, garlic, and walnuts are all excellent sources of glutathione precursors
However, very high doses may cause side effects such as: B12 can also interact with certain medications, including those used to treat acid reflux, such as Prilosec (omeprazole) and Prevacid (lansoprazole), as well as some diabetes medications, such as metformin