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Situations or conditions that can cause vitamin B12 deficiency include: You are more likely to develop vitamin B12 deficiency if you have one or more of the following risk factors: Left untreated, vitamin B12 deficiency can cause lasting side effects that affect your nervous system and brain

Taschler, U

If there is clinical improvement and if a reticulocyte response is observed, the same amount may be given on alternate days for seven doses, then every three to four days for another two to three weeks

Always consult with a healthcare professional before starting any new supplement regimen

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