MARINCAL DX-400IU is a medication combining calcium carbonate sourced from coral (typically 1250mg or 1500mg, providing 500mg or 600mg of elemental calcium) and 400 IU of vitamin D3 (cholecalciferol) in tablet form. This combination is primarily used to prevent and treat conditions like osteoporosis, osteomalacia, rickets, tetany, and hypoparathyroidism, as well as to supplement calcium intake during growth, pregnancy, breastfeeding, and old age. The coral calcium's bone-like structure may aid absorption, while vitamin D3 enhances calcium absorption. Dosage is usually one tablet once or twice daily after meals, and while generally well-tolerated, potential side effects include mild gastrointestinal issues, with rare risks of hypercalcemia with prolonged use. It's crucial to consult a healthcare professional for personalized advice, especially regarding interactions with other medications and in individuals with pre-existing kidney conditions.MARINCAL DX-400IU is a medication combining calcium carbonate sourced from coral (typically 1250mg or 1500mg, providing 500mg or 600mg of elemental calcium) and 400 IU of vitamin D3 (cholecalciferol) in tablet form. This combination is primarily used to prevent and treat conditions like osteoporosis, osteomalacia, rickets, tetany, and hypoparathyroidism, as well as to supplement calcium intake during growth, pregnancy, breastfeeding, and old age. The coral calcium's bone-like structure may aid absorption, while vitamin D3 enhances calcium absorption. Dosage is usually one tablet once or twice daily after meals, and while generally well-tolerated, potential side effects include mild gastrointestinal issues, with rare risks of hypercalcemia with prolonged use. It's crucial to consult a healthcare professional for personalized advice, especially regarding interactions with other medications and in individuals with pre-existing kidney conditions.