Lapatinib is a drug that is used for treating metastatic breast cancer (specifically, HER2-positive cancer). This eMedTV article explains how the medication works, offers dosing information, and lists possible side effects.
Anemia, diarrhea, and nausea are some of the most commonly reported side effects of lapatinib. This eMedTV segment provides a list of other possible side effects, including potentially serious ones that may require prompt medical attention.
Lapatinib is used for the treatment of HER2-positive cancer that has spread to other parts of the body. This eMedTV Web page further discusses lapatinib uses and explains whether there are any off-label uses for the medication.
The usual recommended dose of lapatinib for treating breast cancer is 1250 mg, taken once daily. This page of the eMedTV library offers more detailed lapatinib dosing guidelines, including a list of precautions and tips for taking the medication.
Pioglitazone, repaglinide, and certain seizure medications may cause drug interactions with lapatinib. This eMedTV resource describes the complications that can occur with these interactions and lists other drugs that may also interact negatively.
Before taking lapatinib, let your doctor know if you have long QT syndrome, liver disease, or allergies. This eMedTV page lists other precautions and warnings with lapatinib, including a list of possible complications that may occur with the drug.
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