DESC: Vitamin B12, or cobalamin, was isolated from a liver extract in 1948 and identified as the nutritional factor in liver, which prevented pernicious anemia, a deadly type of anemia characterized by large, immature blood cells. It is needed for DNA synthesis particularly in the production of red blood cells, which carry oxygen to the body. It also acts as a carrier of methyl groups used to produce molecules such as creatine, which is necessary for energy reserves in the muscles. B-12 Dots are to be held under the tongue until completely dissolved to maximize absorption of the B-12. They have a delicious 100% natural cherry flavor that is sugar free.