vitamin b12 injection when pregnant injections during pregnancy The effects of B12 supplementation in pregnancy and postpartum on growth Vitamin B-12 3000 mcg Injection,
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Malar J 8: 156
Of course, you will need to see a doctor to know the recommended amount for you or your child

D., & Muscat, J

There is no Tolerable Upper Intake Level (UL) for vitamin B12 because high intakes have not been associated with any adverse health effects

the body needs adequate B12 to convert homocysteine into a form that the body can use