Calcium 600 mg (algae Source) and Vitamin D3 400 IUCalcium Preparations (Vitamin D3) Indication: Calcium and Vitamin D3 is used for the treatment of:• Osteoporosis• Osteomalacia• Rickets• Tetany• Parathyroid disease Dosage & Administration: One tablet in the morning and one tablet at night. Preparation: G-Calbo™ DX: 30 tablets in double layer HDPE container.