CAD D 1000IU 30s is a dietary supplement that provides 1000 IU of vitamin D3 per capsule. Vitamin D3 is essential for calcium absorption, bone health, and immune system support. This supplement is commonly used to prevent or treat vitamin D deficiencies and support overall health. The product comes in a bottle of 30 capsules, offering a one-month supply for individuals looking to maintain adequate vitamin D levels.