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The British Society for Haematology emphasises that treatment should not be delayed whilst awaiting confirmatory test results if clinical suspicion of B12 deficiency is high, particularly when neurological symptoms are present
Light protection matters too
Orally administered supplements from a big box store cost as little as $30 for a full year's supply of tablets
Birth defects have not been observed at supplemental doses less than 3,000 micrograms (10,000 IU)/day of preformed vitamin A
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