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Meeting The Criteria For An NHS Prescription To get B12 injections on the NHS, your blood test results need to show a confirmed deficiency, falling below a specific level
Roux-en-Y gastric bypass surgery (RYGB) but not sleeve gastric bypass surgery or gastric banding, increases the risk of vitamin B 12 deficiency and requires preventive post-operative treatment with either injected or high-dose oral supplementation
Retrieved 14 March 2016
Importantly, this does not automatically mean injections oral supplements are appropriate for the majority of older adults
Int J Mol Sci 2018
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