The information here has been extremely helpful -- thanks to everyone.

Rose, on your website you say that "Hydroxocobalamin is generally preferred over cyanocobalamin" and that "Methylcobalamin has some advantages neither of the other types do."

I've had a lot of trouble with medications that have methyl compounds, so I'm particularly interested in the hydroxocobalamin. Can you say more about its advantages? And do you -- or anyone -- know how to find it in an oral form?

Also what would be the dosage of either of those alternatives that would be equivalent to 1000 mcg of cyanocobalamin?