what is the b12 injection good for Vitamin Shots Guide: Benefits & to Expect The Truth About B12 Injections:

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Borderline serum B12 results often warrant measurement of methylmalonic acid (MMA) to assess intracellular deficiency

This method ensures the vitamins quickly enter the bloodstream, bypassing the digestive system

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By adjusting the dose and watching how patients do, doctors can help them safely and effectively

Patients with Normal Intestinal Absorption Where the oral route is not deemed adequate, initial treatment similar to that for patients with pernicious anemia may be indicated depending on the severity of the deficiency