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Vegetarians and vegans who drink alcohol should be especially careful and may need supplements or fortified foods to maintain healthy B12 levels
Choose Methylcobalamin B12 There are four forms of vitamin B12
Body weight-based dosing around 4-6mcg per kilogram provides individualized starting points
Oral supplements should be taken daily a weekly dose is not recommended
Read our detailed breakdown of how fast semaglutide works for a week-by-week timeline
A 2012 review of all known studies determined that daily B12 losses in apparently healthy adults and elderly range from 1.4 to 5.1 g (Doets, 2012)
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