Ultra D3 Oral Drops are used to manage inadequate calcium absorption, pediatric bone fragility, and structural developmental gaps caused by a Vitamin D deficiency in infants and young children. It contains Cholecalciferol (Vitamin D3) as its primary active ingredient. This liquid formulation works by maximising the gastrointestinal transport and retention of dietary calcium to build strong teeth and healthy bones. The supplement supports immune function and healthy skeletal growth during crucial developmental stages.