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1.5 g according to the UK National Health Service (NHS) and British Nutrition Foundation (BNF) Increased requirement: 5 g factors which increase an individuals B12 requirement are illness, stress, toxic stress, pregnancy and breastfeeding Dietary Supply or Supplement Requirement
Bacteriostatic water resists this contamination, allowing the vial to be used across multiple reconstitutions over its shelf life
Drug/Laboratory Test Interactions: Persons taking most antibiotics, methotrexate and pyrimethamine invalidate folic acid and vitamin B 12 diagnostic blood assays
Cardiovascular and Metabolic Health Vitamin B12 helps regulate homocysteine levels, a marker linked to heart disease risk
therapeutic doses have not been linked to problems in nursing infants, but your clinician may monitor both mother and baby if treatment is necessary
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