When you take iodixanol along with radioactive iodine, which includes 1-131 and 1-123, the contrast agent can interfere with how your thyroid takes up the radioactive iodine. This can reduce how well the treatment or tests work if you have thyroid carcinoma.
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.