http://thyroid.about.com/od/hormonep...dosechange.htm her står det om doseendring

19 women who were planning to become pregnant were evaluated prior to becoming pregnant, and then every two weeks during pregnancy. In 17 out of 20 women, they needed an increase in their thyroid dose, and the mean level of increase was 47 percent, at eight weeks into the pregnancy.
Du kan antagelig trygt øke så mye, jeg mener jeg har lest 50 % økning.

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