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Our maintenance dose is listed in the NICE Guidelines with neurological involvement at two monthly intervals and without at three monthly intervals
While oral absorption is limited for B12, taking very high doses (e.g., 1000mcg or 2000mcg) can allow for a small amount of passive absorption that doesnt rely on intrinsic factor
In patients with suspected B12 deficiency, initial lab tests should include a complete blood count (CBC) with a peripheral smear and serum B12 and folate levels
PMID 6508989
It contains a small amount of benzyl alcohol to help prevent bacterial growth and maintain solution integrity
Feeling winded after light activity can be related to the anemia a B12 deficiency can cause
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