Cobalamin, another name for vitamin B12, is a necessary ingredient needed for a number of body processes, including as the synthesis of DNA, the production of red blood cells, and neurological function. It is essential for the synthesis of DNA and RNA, the genetic material that makes up cells, as well as for the upkeep of healthy nerve cells. In addition to being naturally occurring in foods including meat, fish, eggs, and dairy, vitamin B12 can also be purchased as a nutritional supplement. A vitamin B12 deficiency can result in anemia, neurological disorders, and other health concerns. It’s critical to track vitamin B12 levels via blood testing in order to identify deficiencies and make sure that supplements are taken as directed. The addition of “(HHD)” indicates the particular context or form of the nutrient, potentially pertaining to a specific medical facility or healthcare professional.