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10.1038/s41598-017-05541-4 104 WangW.MarinisJ
Selected batches are independently tested by Janoshik Analytical, with reports published on the product page
Most people describe mild, brief discomfort similar to any injection
This means its the highest quality on the market
Reddy IA, Stanwood GD, Galli A
Participants in this study were supplemented with 30 mcg (1,200 IU) vitamin D daily if serum 25-hydroxyvitamin D was between 20 and 29 ng/mL or 1,250 mcg (50,000 IU) weekly if serum 25-hydroxyvitamin D was below 20 ng/mL
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