Vitamin B12 Deficiency: Causes, Symptoms, and Treatment

for two weeks until your symptoms start improving. Then, you may be able to switch to B12 supplements.

If your B12 deficiency is due to an autoimmune disease or something that’s not related to diet, you may need to get injections every two or three months for the rest of your life.

The injections are usually given in your upper arm or thigh, or into continue reading …