a pt taking 60000 i.u.'s of cholecalciferol once/wk and another taking 0.25 mcg calcitriol daily. Are they equivalent?
No - the doses are not the same.
One IU of Vitamin D (Cholecalciferol) activity is equal to 0.025 mcg vitamin D (1 mg = 40,000 units).
The patient taking 0.25mcg Calcitriol is taking the equivalent of 10 IU a day , therefore 10 x 7 = 70 IU / week
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