NB-Biosun 60K contains Cholecalciferol (Vitamin D3) 60,000 IU in softgel capsule form, used to treat and prevent Vitamin D deficiency. Vitamin D3 plays a vital role in calcium absorption, bone health, and immune system function. It is essential for maintaining strong bones and teeth and helps regulate the body's calcium and phosphorus levels. NB-Biosun 60K is commonly prescribed for individuals with low Vitamin D levels, osteoporosis, or those at risk of deficiency due to limited sun exposure, certain medical conditions, or dietary limitations.