What is an adverse effect of medication?

An adverse effect of medication refers to unexpected and potentially serious or life-threatening reactions that occur as a result of drug administration. These effects can vary greatly in severity and may occur even when the medication is taken as directed. Recognizing these adverse effects is crucial for ensuring patient safety and managing the risks associated with medication use.

While other options describe effects or outcomes that may arise from medication, they do not align with the definition of an adverse effect. Expected benefits highlight the intended positive outcomes of taking medication, whereas mild and manageable side effects are typically not considered adverse effects due to their relatively low severity. Gradual improvement in symptoms showcases the positive therapeutic effects of medication, which contrasts with the negative implications of an adverse effect. Understanding that adverse effects can be serious helps healthcare professionals monitor and respond effectively to any negative reactions patients may experience while undergoing treatment.