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When given by intramuscular injection, the dose bypasses the digestive tract and is absorbed reliably, which matters because dietary B12 absorption depends on stomach acid and a protein called intrinsic factor, both of which decline with age, medication and certain gut conditions

Always consult your GP or a qualified healthcare professional to determine the cause of any deficiency and the most appropriate, effective, and safe treatment plan for you

Some people may struggle to absorb enough through food or supplements, making injections a helpful option

During corticosteroid therapy may occur psychological disorders such as: euphoria, insomnia, mood swings, depression or personality disorders and even severe depression or psychosis

Both methods generated the same species assignments for 60 ASVs, whereas 11 ASVs were mapped to dissimilar species by the different methods