Hypothyroid - folic acid and Vitamin B12 injections

Dear Ask The Doctor: I currently take 100mg of eltroxin for hypothyroid, my doctor has now prescribed weekly b12 injections and folic acid, why and are these connected

Dear Jean: Vitamin B12 and Folic Acid both play a big role in the metabolic processes. The deficiency is usually associated with hypothyroid conditions, because of decreased availability of these nutrients due to reduced diet and appetite, and additional supplementation is usually required for effective formation of the thyroid hormones and metabolism.