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Adults: Initially 50-100 mcg increased by 25-50 mcg at 3-4 week intervals to maintain maximum 150-300 mcg daily.
Children: Initially 25-150 mcg with 25 mcg increments every 2-4 weeks. Juvenile myxedema starting dose of children over 1 year may be 2.5 to 5 mcg/kg per day.
It is best to take levothyroxine on an empty stomach, 30 to 60 minutes before breakfast.
If necessary (such as for young children), a levothyroxine tablet may be crushed and mixed with one or two teaspoons of water. This mixture must be taken immediately (it should not be stored).
Try to take levothyroxine at the same time each day to keep an even level of the medication in the blood.
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