In general, after two weeks of taking iodine 131 for hyperthyroidism, you can share the toilet with your family, but since the dosage of iodine is different for each patient, you need to consult a specialist for specifics. Iodine 131 is a common means of treating hyperthyroidism, which is mainly used to treat hyperthyroidism by destroying the thyroid tissue through rays, and it is mainly applicable to patients with thyroid enlargement of II degree or above, and patients who are allergic to the drug. After receiving iodine 131 treatment, the patient’s excreta will carry radioactive substances and need to be properly isolated from family members, usually for more than a week, so after two weeks of treatment, you can share the toilet with family members, and after using the toilet, you have to flush repeatedly to flush the urine and feces clean. However, because the dosage of iodine is not the same for each patient, the dosage is large and needs to be isolated for a longer period of time, and it is recommended to consult a specialist for specifics. It is recommended that patients after iodine 131 treatment should be isolated according to their own situation as prescribed by the doctor.