Vitamin D3 200,000 IU (International Units) is a high-dose supplement of vitamin D3, which is the biologically active form of vitamin D. It is typically prescribed by healthcare professionals to correct vitamin D deficiency quickly. This high dosage is intended for short-term use and is usually taken weekly or monthly, depending on the individual's needs. Vitamin D plays a crucial role in maintaining bone health, supporting immune function, and regulating mood. However, it's important to use hig