A B12 level of 170 is very low. VERY.
I'd get that fixed ASAP. You need to be at least at 400 or above.
5mg of oral methylcobalamin daily on an EMPTY stomach should raise your levels to a better place within 3 months. This is over the counter and only costs pennies a day. I just tested out Puritan's when they first offered it recently and the 5mg raised me up to 2000 in 3 mos. So it does work, and is a quality product.
Many online places have it... iherb.com, Puritan's Pride and Swanson's are examples. Most local stores still do not carry it tho.
Please read my link that I gave you. There is a link on that thread to American Association of Family Physicians from 2003 written for doctors with the newer B12 guidelines. Also post 70 has a link to Dr. Snow's medical paper in the AMA journal explaining neurological symptoms and low B12, among other things.
Get that fixed ASAP and then see how that facial numbness fares.
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All truths are easy to understand once they are discovered; the point is to discover them.-- Galileo Galilei
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Weezie looking at petunias 8.25.2017
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