No. Folic acid is vitamin B9; vitamin B12 is a different nutrient with distinct roles in the nervous system, DNA synthesis, and blood cell formation. They work in the same metabolic “pipeline,” which is why deficiencies can look similar on blood counts. The key operational risk is that taking folic acid alone when B12 is deficient may partially correct anemia while delaying recognition of neurological damage. For that reason, especially when using supplements long-term, folate status should be considered together with B12 rather than treated as interchangeable.