Prostate Protection. Jarrow Formulas®Vitamin D3 (cholecalciferol) is from purified fish liver oil and is free ofVitamin A. Fat-solubleVitamin D3 is converted by the kidneys into the hormone calcitriol, the activated form ofVitamin D3 which affects a variety of target tissues including bone, intestine, muscle, brain, skin and immune systems 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 prostate cells.
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