Taking targeted drugs with side effects can be based on the condition to decide whether to reduce the dosage, you need to communicate with the doctor to decide. First of all, when side effects occur, do not hastily reduce the dosage of targeted drugs on your own, or hastily stop taking the drug, the patient needs to fully communicate with the doctor, so as not to have an impact on the original condition. In some cases, the doctor will give the patient an appropriate reduction in the dosage of targeted drug therapy, or extend the interval of targeted drug therapy to reduce the impact of targeted drug side effects. When the side effects of taking targeted drugs occur, causing discomfort, you should go to the hospital in time, under the guidance of the doctor’s treatment and adjustment of drug regimen.