It is very important that your doctor check your progress very closely while you are receiving this medicine. This will allow your doctor to see if the medicine is working properly and to decide if you should continue to receive it.
This medicine may cause allergic reactions. Tell your doctor right away if you have difficulty with breathing or swallowing; fever; hives; itching skin; nausea; reddening of the skin, especially around the ears; swelling of the eyes, face, or inside of the nose; or unusual tiredness or weakness after you have receive this medicine.
While receiving this medicine, you will be exposed to radiation. If you have any questions about this, talk to your doctor.
You will receive a medicine such as potassium iodide, Lugol's solution, or potassium perchlorate before receiving Ioflupane I 123. These medicines will help protect your thyroid gland from radiation (iodine 123). Tell your doctor if you have had an allergic reaction to these medicines or other products containing iodine.
Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal or vitamin supplements.