Defrol OFT 2000 IU is a formulation of Vitamin D3 (cholecalciferol) designed to help maintain adequate levels of vitamin D in the body. This dosage (2000 IU) is commonly used to treat and prevent vitamin D deficiency, support bone health, and aid in the proper absorption of calcium and phosphorus. Vitamin D plays a vital role in immune system function, muscle health, and bone mineralization. The "OFT" formulation typically refers to soft gelatin capsules that make the medication easier to swallow and improve absorption. This dose is often prescribed for individuals at risk of vitamin D deficiency, such as those with limited sun exposure, older adults, or individuals with certain health conditions like osteoporosis. Defrol OFT 2000 IU is typically considered safe for daily use under medical supervision to ensure optimal vitamin D levels without the risk of toxicity.