Jarrow's Vitamin D3 2500IU 100Sgels

What does Vitamin D3 do? 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.* Calcitriol enhances calcium and phosphorous absorption and stimulates the synthesis of osteocalcin, an important structural protein in bone.* Also, calcitriol is involved in proper cell differentiation (changing of cell function), including in prostate cells.**These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Suggested UsageFor adults, take 1 softgel per day with a meal, or as directed by your qualified health care consultant. NOTE: DO NOT take more than 1 softgel per day without medical supervision. Consult physician if undergoing dialysis or if you have any kidney disfunction, including stones. Other Ingredients Soybean oil, fish oil, gelatin, glycerin, and water. No wheat, no gluten, no dairy, no egg, no shellfish, no nuts/tree nuts.