Vitamin B-12 is provided as methylcobalamin, a highly utilizable form, in a convenient sublingual lozenge
Maras A, Schroder CM, Malow BA, Findling RL, Breddy J, Nir T, et al
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That number comes from McCoy et al
The details of the data have been published elsewhere, and the healthcare outcomes derived from these data were compared with other data sets for validity and consistency
Lastly, they may also not be suitable for individuals with severe kidney or liver disease