Medication effects ctd TSH secretion inhibition: Dopamine, dobutamine, octreotide, glucocorticoids TSH  : metoclopramide Metformin  TSH , fT4= Absorption  : iron, cholestyramine, ppi, calcium, high fiber diet Metabolism  : anti-epileptic drugs TBG  : estrogen, SERMs, methadone, 5FU TBG  : androgens deiodinase inhibition: PTU, methimazol, propranolol Monitor TSH in 4-6 wks after medication change
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