Hi Dee Vitamin D3 10000IU contains 30 soft gelatin capsules designed to help maintain optimal vitamin D levels in the body. This high-potency supplement supports bone health, calcium absorption, immune function and overall wellbeing. Vitamin D3 (cholecalciferol) plays an essential role in calcium absorption and bone mineralization. It helps prevent vitamin D deficiency which can lead to bone disorders. The 10,000 IU dosage is a high-strength formulation that may be prescribed for treating severe deficiency under medical supervision. The soft gelatin capsule format helps with better absorption. This supplement should be taken as directed by a healthcare professional.