Guest guest Posted June 12, 2009 Report Share Posted June 12, 2009 Heidi, I think 50mcg is half of a 1mg. I believe 1mg is 1000mcg. That is my opinion but I am not sure. what amount do you think would be appropiate for a 9 years old that is very much depleted of it.? Olga Quote Link to comment Share on other sites More sharing options...
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