What is a potential side effect of Lapatinib?

Lapatinib, a targeted therapy often used in the treatment of breast cancer, is known to produce a range of side effects, one of which is diarrhea. This occurs because Lapatinib can affect the normal functioning of the gastrointestinal tract, leading to increased bowel movements and loose stools. It is essential to monitor this side effect, as it can lead to dehydration and impact a patient's overall health if not managed properly.

While other side effects like rash and severe muscle pain can occur with various cancer treatments, diarrhea is particularly noted as a common adverse effect specifically associated with Lapatinib therapy in clinical settings. Recognizing and addressing this side effect is crucial for maintaining patient quality of life during treatment.