<Li> US: OTC </Li> <Tr> <Th_colspan="2"> Pharmacokinetic data </Th> </Tr> <Tr> <Th> Bioavailability </Th> <Td> Readily absorbed in distal half of the ileum </Td> </Tr> <Tr> <Th> Protein binding </Th> <Td> Very high to specific transcobalamins plasma proteins Binding of hydroxocobalamin is slightly higher than cyanocobalamin . </Td> </Tr>

Where do we get vitamin b 12 from