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People who dont produce enough intrinsic factors can become deficient
The most common side effects appear to be related to the method of administration, which is typically intramuscular or subcutaneous injection
A phase 2 randomised controlled trial published in the New England Journal of Medicine (2023) reported substantial weight loss and improvements in glycaemic parameters, though the trial was conducted in a closely monitored clinical setting with defined eligibility criteria
Wipe the B12 injection site with an alcohol swab to sanitize the area
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