A member asked:

Why do some people with vitamin b12 deficiency need vitamin b12 injections for a long time?

A doctor has provided 1 answer

Some people are unable to absorb B12 in their intestine and injection is a sure way of getting enough B12. An alternative would be to take sub-lingual form of B12 followed by testing to ensure proper absorption of sufficient B12.

Answered 4/24/2022

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