This can cause bleeding, either obvious and painful or hidden and painless. This loss of blood may lead to anemia. Some patients may need additional medications to control their stomach symptoms. Symptoms of headache or drowsiness are usually mild, but if severe, the medicine may have to be stopped. If the function of these cells is impaired, it will take longer for blood to clot and bruising can occur more readily.
Some patients are very susceptible and experience easy bruising.
If severe, the medication should be discontinued. In young, otherwise healthy people, these side effects are not common. Patients with lupus nephritis often have some reduction in kidney function. Patients with active lupus appear to be especially susceptible to this side effect. If this occurs, these drugs should not be used.