Parnacal Os 250 Mcg/0.25mcg/7.5 Mg Tablet is used for supporting bone health and mineral balance. It combines calcium, vitamin D3, and zinc in one formulation to maintain skeletal health and overall well-being. Calcium provides strength to bones and teeth, while vitamin D3 (cholecalciferol and calcitriol) assists in the absorption and metabolism of calcium for better utilisation. Zinc contributes to cell growth, repair, and immune function, making the formulation beneficial for overall health maintenance.