It is possible that taking anti-inflammatory drugs can cause low white blood cells. Anti-inflammatory drugs refer to antibiotics, which are drugs that kill bacteria. These drugs are cephalosporins, penicillins, chloramphenicol, erythromycin, etc. The instructions for many of these antibiotics will indicate the corresponding adverse reactions, one of which is likely to be low white blood cells. So when you have a cold and fever or have an infection, and you have low white blood cells from taking antibiotics, in addition to considering systemic infections, sometimes you will also consider drug-induced low white blood cells. But taking anti-inflammatory drugs must have a corresponding infection, so there will not be only one possible cause of low white blood cells, so this time we have to combine the corresponding clinical manifestations, as well as the degree and timing of low white blood cells, to determine what causes it.