Vitamin B12, also known as cobalamin, is an important water-soluble vitamin involved in red blood cell production, brain health, and DNA synthesis ( A deficiency in this key vitamin can cause serious symptoms, including fatigue, nerve damage, digestive issues, and neurological problems like depression and memory loss ( Therefore, many people turn to vitamin B12 supplements to help meet their needs and prevent a deficiency
Vitamin B12 injections are only available via a doctors prescription following a clinical diagnosis of low levels
For the full breakdown of the research, see our guide on whether B12 injections work for weight loss
(The cost of B12 is pennies but the time for nurses to give the injection appears to be the saving here.) Some practices are enclosing diet sheets for patients to learn how to make sure they are eating foods containing B12
Blood markers may change before nerve symptoms improve, and long-standing neurologic symptoms may take longer to assess