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Oral capsules sold online are unregulated, with no guarantee of identity or dose
If any questions arise, for instance, about needle size, or if you experience an injection site issue, consult your provider
Because of this, the same vial can usually be used for multiple doses when stored and handled correctly
We recommend future research directions to determine when to start with SL, IM, or oral vitamin B12 in different situations
Yu et al., 1998
Start with your research focus
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