The treatment of low white blood cells caused by taking hyperthyroid medication includes stopping the medication for observation as well as treatment with leukocyte growth-promoting drugs.
Treatment with antithyroid drugs such as propylthiouracil may result in the adverse effect of granulocytopenia, so hyperthyroid patients taking antithyroid drugs need to undergo regular blood tests to determine whether there is a decline in white blood cells.
If leukocytes are less than 3*10⁹/L or neutrophils are less than 1.5*10⁹/L, it is necessary to discontinue antithyroid medication, and it may be necessary to give leukocyte growth-promoting drugs, such as granulocyte colony-stimulating factor.
It is recommended that hyperthyroid patients who experience a drop in white blood cells go to the hospital and ask their doctor to make a judgment and give them a treatment plan.