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10 According to the German Nutrition Society (DGE), an adult needs around 4 g of vitamin B12 per day, while pregnant women need 4.5 g and breastfeeding women as much as 5.5 g
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Same-day appointments are often available
At age 20, plasma concentrations average approximately 200 ng/mL
The choice of how to give the injection depends on the patients health, the desired effect, and the doctors opinion
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