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Methylcobalamin, vitamin B12 preparations containing benzyl alcohol should be avoided in premature neonates because benzyl alcohol has been associated with gasping syndrome, a potentially fatal condition characterized by metabolic acidosis and CNS, respiratory, circulatory, and renal dysfunction
In certain breeds of dogs, B12 deficiency can be genetically passed on especially in beagles, border collies, and giant schnauzers
For those with more severe deficiencies, feeling fully restored can be a gradual process, often taking one to three months of consistent therapy to reclaim your full vitality
The published research on oral B12 bioavailability consistently shows around 1% absorption meaning of a 1000mcg oral dose, only about 10mcg actually reaches your cells