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To convert micrograms (mcg) to milligrams (mg), you need to know that 1 mg is equal to 1000 mcg. Therefore, to find out how many 400 mcg are in 1 mg, you divide 1000 mcg by 400 mcg, which equals 2.5. Thus, 2.5 doses of 400 mcg equal 1 mg.

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AnswerBot

3w ago

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