If you take B12 orally in any form, you need to do this on an empty stomach.
Also I have seen estimates that up to 10% may be passively absorbed orally if taken correctly.
Passive absorption of drugs in the microgram range does not occur reliably due to fiber/food influences. This is trug for digoxin and thyroid hormone.
So make sure you have no food in the stomach and for 1 hr after when using the oral B12.
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Weezie looking at petunias 8.25.2017
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