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Lipids Health Dis (2017) 16:203
10.1016/j.freeradbiomed.2005.04.016 Free Radic
Once youve chosen the type of B12, the next step is deciding how it will be administered
Unlike oral supplements, an injection delivers vitamin B12 directly into the body without relying on digestive absorption which can be reduced by age, certain medications such as proton pump inhibitors or metformin, or gastrointestinal conditions
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