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Vitamin B12 injections have long been the only treatment for pernicious anemia
While very high oral doses (1,000 to 2,000 mcg) can achieve some passive absorption without intrinsic factor roughly 1% of the dose is absorbed passively many clinicians prefer the reliability and rapid correction offered by injections in this population
Redness, itching, or mild irritation at the application site can occur, particularly during initial use or with higher concentrations
Nutr Rev 2002;60:1424
This product has not been evaluated or approved by the FDA and is not for human or animal use
The speed at which a Vitamin B12 shot works can vary depending on several factors, including the individuals level of deficiency, overall health, and the presence of any underlying medical conditions
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