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She had pernicious anemia, in which vitamin B12 is not absorbed from the intestine.
Home vitamin b12 b12 vitamin b12 deficiency b12 deficiency b12 sublingual. vitamin b12.
The doctor is looking for vitamin B12 and/or folate deficiencies.
It is also possible to get vitamin B12 in 5 mg lozenges that can be taken up to eight times a day.
Rarely, inactivation of vitamin B12 may occur which can then interfere with folate metabolism which can result in bone marrow changes.