Leukostimulants are drugs that raise white blood cells. Whether or not to take leukostimulants after discharge from the hospital after iodine 131 treatment needs to be taken in conjunction with the white blood cell count. If the white blood cells are low, then you need to take drugs to raise white blood cells, if the white blood cell count is low to the extent of granulocyte deficiency, you may also need to use granulocyte stimulating factor to raise white blood cells. Iodine 131 treatment for hyperthyroidism, due to the powerful iodine gathering effect of the thyroid tissue, the radionuclide iodine 131 collects in the thyroid tissue and releases beta rays to destroy the thyroid cells, ultimately reducing the production of thyroid hormones. The beta rays released by iodine 131 in the thyroid tissue have a range of only 2 millimeters, and basically do not involve the surrounding tissues. The side effects of this treatment are hypothyroidism, radiation thyroiditis, induction of thyroid crisis, etc. There is a possibility of white blood cell reduction as a side effect. Iodine 131 treatment after the specific need to continue to use the ascending white drug need to be combined with their own conditions, under the guidance of the doctor treatment, not to stop or adjust the dose of drugs, so as not to delay the condition.