Vitamin D3 2500 IU Cholecalciferol, 100 Softgels, Jarrow Formulas

Jarrow Vitamin D3 2500 Cholecalciferol. Dietary Supplement. Jarrow Formulas Vitamin D3 (cholecalciferol) is derived from cod liver oil and sheep's wool and is free of Vitamin A. Fat-soluble Vitamin D3 is converted by the kidneys into the hormone calcitriol, the active form of Vitamin D3, which affects a variety of target tissues, including bone, intestine, muscle, brain, skin and immune cells.