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May-Jun 2022;43(3):103460

A CBC, iron studies, Vitamin B12, Folate, and Vitamin D may be considered according to dietary pattern, weight-loss rate, symptoms, and medical history

J Physiol 590:13131330

Route/evidence mismatch: the pivotal mouse study tested subcutaneous injection at a fixed research dose (20 mg/kg, three times daily) the oral capsule use that is actually sold and discussed commercially has not itself been directly tested in that published research

If you have a problem with how your body uses iron

Most people with vitamin B 12 deficiency are treated in primary care with intramuscular (IM) vitamin B 12