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Without enough of it, you may become anemic leading to fatigue, shortness of breath, dizziness, and complications during labor and delivery [*]

Testing For B12 Deficiency: There are several different ways you can test for a functional B12 deficiency

Calves - 2ml every 3 months

Full per-compound evidence lists, including PMIDs and DOIs, are maintained in the linked research articles below

Each 1ml ampoule provides 2500mcg methylcobalamin and is suitable for intramuscular (IM) administration under professional guidance

Some people also develop pinkeye, a swelling of the brain (which can cause brain damage) and pneumonia