Decal B12 for the prevention and treatment of calcium, vitamin D and vitamin B12 deficiency. Calcium is essential for building bones, and the body needs additional amounts of it during adolescence. Vitamin D enhances the absorption and use of calcium by regulating the ratio of calcium and phosphorus in the body. It is essential for cell metabolism and helps in the synthesis of nucleic acids. Decal B12 syrup can be taken with milk or water or directly using a spoon.