Iohexol is an iodine-containing contrast dye used in scans. If you are due to have a thyroid test that uses radioactive iodine, tell your doctor about any recent iohexol injection. For up to 2 weeks after you get iohexol, your thyroid gland may take up less iodine than normal, and this can affect the result of the test.
These medicines are often taken together with some care. Your doctor may change a dose, space them apart or check on you more often. Make sure your doctor and pharmacist know you take both.