What should I do if I have a fever while taking imatinib (Gleevec)?

Fever occurs while taking Imatinib (Gleevec) (Imatinib), which is a phenomenon that many patients may encounter during the treatment process. Fever may be caused by many factors, including side effects of the drug itself, infection or immune response, etc. Therefore, when fever occurs, it should not be taken lightly and should be dealt with promptly.

First, imatinib, as a tyrosine kinase inhibitor, may cause a mild reaction of the immune system, leading to an increase in body temperature. This kind of fever is often part of the drug reaction. If the body temperature is not high (such as a low-grade fever around 38℃) and there is no other obvious discomfort, you can take a proper rest, replenish fluids, and observe whether the symptoms resolve on their own. If it is a low fever that occurs early in the first medication, it may generally be a reaction of the body's adaptation process.

Secondly, we need to be vigilant that imatinib may cause a decrease in the number of white blood cells, thereby increasing the risk of infection. If your fever is accompanied by a cough, sore throat, frequent urination, rash, or other signs of infection, it's not just a reaction to the medication and you should seek medical attention immediately. Doctors usually arrange blood tests and other tests to determine whether there is infection or other conditions that require intervention. If necessary, antibiotics may be used or medication may need to be temporarily stopped.

Finally, if the patient develops a fever while taking the medicine, he should not stop taking the medicine on his own or add antipyretic drugs, but should deal with it under the guidance of a doctor. Especially patients who use imatinib for a long time should pay more attention to every unusual change in body temperature and regularly monitor blood pictures and liver and kidney functions. If fever is frequent or the elevated body temperature persists, drug tolerance and treatment plans need to be re-evaluated to ensure maximum drug efficacy within a safe range.

Reference materials:https://www.gleevec.com/