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[3] The British Society for Haematology guidelines emphasise that the response to treatment should be monitored through clinical assessment and blood count testing, rather than routine measurement of B12 levels after treatment has started
(4) If youre taking B12 orally, sublingual B12 is effective because it bypasses absorption in the stomach, meaning you dont need sufficient levels of intrinsic factor to absorb it
Tuna, salmon, poultry, beef, potatoes, spinach, bananas and fortified breakfast cereals are all good sources
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