Cobalamin, often known as vitamin B12, is an essential water-soluble vitamin. It plays an important role in many processes, such as DANN synthesis, brain health, and the production of red blood cells. If the body does not take in sufficient vitamin B12, it would lead to several serious signs. These include digestive problems, nerve damage, fatigue, and neurological issues like memory loss or depression. Thus, many people choose vitamin B12 supplements, with cyanocobalamin and methylcobalamin being the two most common sources, to reduce the risk of a deficiency and meet their needs.