For example, vitamin D3 is more effective than vitamin D2 ... Two drops deliver 1,000 international units (IU) of vitamin D, making it easy to tailor your intake to your specific needs.
Why we chose it: Pure Encapsulations Vitamin D3 gets our pick as the best high ... dose supplement — at least 10,000 international units (IU) daily. This may be followed by a maintenance dose ...
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