why b12 injections for pernicious anemia anaemia (PA) or deficiency Vitamin B12 deficiency causes pernicious
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Clinicians should review the patients medication list and use pyridoxine judiciously, adjusting therapy as needed to account for these interactions

Journal of the neurological sciences

Standard prenatal multivitamins in the UK generally contain between 2.5 and 10 micrograms of B12, which may be sufficient for women with adequate dietary intake but insufficient for those with established deficiency or malabsorption
