Originally Posted by mrsD

Using oral forms of B12 requires no food be present. If food is present absorption will be hindered and much lower. So empty stomach and nothing for an hour after, is best.

There are some medical sites now, that encourage doctors to use
oral treatments now. These of course are best done every day...and now can cost just pennies a dose. The one we use now from Costco cost us 6 cents a dose.