Bursting with 4000iu of Vitamin D. D3 (Cholecalciferol) 4000iu 2000%. D3 (Cholecalciferol), Di Calcium Phosphate, Magnesium Stearate, Silicon Dioxide, Microcrystalline Cellulose (MCC). Our Vitamin D3 Tablets provide double the dosage of typical vitamin D tablets.