What Affects How Quickly B12 Works Several factors influence the speed and effectiveness of B12 treatment, making individual responses highly variable
These are research figures, framed for research use only
If any of these effects persist or worsen, tell your doctor or pharmacist promptly.
B12 injections are more effective in getting into your body because theyre given intravenously, straight into your bloodstream
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Naveed Sattar, a professor of cardiometabolic medicine at the University of Glasgow who was not part of the team but was involved with previous work on the trial, said the findings are not a surprise, as excess weight is a well-established driver of elevated blood pressure and impaired glucose control