Some medicines can make liothyronine much less effective when taken at the same time. If you take any of the following medicines, take your liothyronine dose 4 hours before you take the other medicine.
cholestyramine;
colesevelam;
colestipol; or
sevelamer.
Tell your doctor about all your current medicines. Many drugs can affect liothyronine, especially:
cancer medicine;
birth control pills or hormone replacement therapy;
cough or cold medicine;
an antidepressant;
steroid medicine;
seizure medicine;
insulin or oral diabetes medicine; or
a blood thinner (warfarin, Coumadin, Jantoven).
This list is not complete and many other drugs may affect liothyronine. This includes prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible drug interactions are listed here.
 Liothyronine drug interactions (more detail)
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