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2018 Jun 19;319(23):2388-2400
18 Table 4 Time to Improvement of Abnormalities in Vitamin B12 Deficiency After Initiation of Treatment A 2005 Cochrane review involving 108 patients with vitamin B 12 deficiency found that high-dose oral replacement (1 mg to 2 mg per day) was as effective as parenteral administration for correcting anemia and neurologic symptoms
Kihei, HI
Pale Skin and Shortness of Breath People with a B12 deficiency may develop pale skin due to a decrease in red blood cell production, which can also lead to feelings of shortness of breath
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