By the way, doctor: Is that too much vitamin D?
When people are discovered to have low levels of vitamin D, it's often recommended that they "tank up" on large amounts for several weeks and then go to a daily dose of 1,000 international units (IU). Don't worry: daily doses well over the usual 2,000 IU upper limit won't overload you and cause toxicity because your body's stores of the vitamin are very low. I usually start my vitamin D–deficient patients on 50,000 IU pills, one each week for several weeks.
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