Probal-D 500 mg Tablet is a combination medication containing Calcium Carbonate (500 mg) and Vitamin D₃ (200 IU), manufactured by Pharmasia Limited. Calcium is essential for maintaining strong bones and teeth, while Vitamin D₃ aids in the absorption of calcium and supports bone health. This combination is commonly used to prevent and treat conditions associated with calcium and Vitamin D deficiencies, such as osteoporosis, osteomalacia, rickets, and hypoparathyroidism. It is also utilized during periods of increased calcium demand, including pregnancy, lactation, and in the elderly. Additionally, Probal-D serves as a phosphate binder in chronic kidney disease and supports bone development during childhood.