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Serious adverse effects have not shown up in the research literature
We also make changes based on how the patient is doing and lab tests
A: This injection is usually prescribed for individuals who have difficulty absorbing oral Vitamin D, have severe deficiency, or need rapid correction under medical supervision
B12 injections may be the better choice if you: Have severe, diagnosed B12 deficiency with neurological symptoms Have pernicious anemia requiring medical supervision Have had gastric bypass surgery affecting all absorption Prefer less frequent dosing and don't mind needles Have a medical condition requiring injectable B12 specifically Who Should Choose Oral Spray
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