Your doctor may have special instructions for you to get ready for your treatment. If you have not received such instructions or you do not understand them, check with your doctor ahead of time.
If you eat large amounts of iodine-containing foods, such as iodized salt and seafoods, or cabbage, kale, rape (turnip-like vegetable), or turnips, the iodine contained in these foods will reduce the amount of this radiopharmaceutical that your thyroid gland will accept. Avoid these foods for at least 2 to 4 weeks before the treatment with radioiodide.
The dose of this medicine will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to do so.
The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.