Biaron D is a food supplement in the form of drops, which is a source of vitamin D (400 IU in one drop). The product is intended to supplement the diet of infants, children and adults with vitamin D. Vitamin D is necessary for proper bone growth and development in children. It also supports the proper functioning of the childrens immune system. At the same time, vitamin D helps in the proper absorption/utilization of calcium and phosphorus and maintains the proper level of calcium in the blood, helps in the proper functioning of muscles, supports dental health and participates in the process of cell division.