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vitamin b12 injection city of london Private service in Stoke Newington Vitamin B12 Injections in London
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For example: People with gastrointestinal disorders (like Crohns disease or celiac disease) might need more B12 because they absorb less

Stomach issues are common with higher doses
doi: 10.1007/s40618-022-01819-1 [DOI] [PubMed] [Google Scholar] 164

Everyone processes nutrients at a slightly different pace

Ann N Y Acad Sci
