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Sequence of events and action. (a) At the time of diagnosis as hypothyroidism, before starting thyroxine. (b) After 20 days of 100 μg/day levothyroxine, on thyroxine 100 μg/day. (c) After 20 days of 100 μg/day levothyroxine, on thyroxine 100 μg/day. (d) After 15 days of decreased levothyroxine dose to 50 μg/day. (e) After 50 days of levothyroxine 50 μg/day. (f) After 50 days of levothyroxine 37.5 μg/day
