It all boils down to this: We need Vitamin D3 Geltabs for optimal health. We need to take a dose large enough to achieve 70 to 80 ng/ml in our Iodine blood test. At home blood test for $65 here:
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For most folks, this requires between 5,000 IU to 10,000 IU daily. After 3 months of taking your starting dosage, get your blood test and adjust the dosage as follow:
Each 1,000 IU change in dosage will adjust the blood test reading by 10ng/ml.