Patient Service Centers
Vitamin B12 and folate support many cellular functions in the body. B12 supports nerve function, and folate (aka folic acid or vitamin B9) converts carbohydrates into energy and to form DNA. Both B12 and folate are essential to red blood cell production. A B12 deficiency or a folate deficiency may lead to fatigue, weakness or anemia.
A vitamin B12 or folate deficiency may occur when the body either doesn’t get enough through dietary intake, or from poor absorption. Vitamin B12 is not produced by plants. Foods rich in vitamin B12 include meat, eggs, dairy products and other foods from animals. Foods rich in folate include broccoli, spinach, asparagus, lima beans, fruits and enriched grain products. Folate is critical during periods of rapid growth, such as during pregnancy and fetal development. However, some people simply can’t absorb either B12 or folate, no matter how much they eat.¹