Lapatinib is a prescription medication used to treat certain types of breast cancer. It is a type of targeted therapy that works by blocking the growth of cancer cells that have certain types of abnormal proteins. Lapatinib is typically used in combination with other medications and is usually taken by mouth once daily. Common side effects of this medication include diarrhea, nausea, and vomiting.
Lapatinib is a medication used to treat a specific type of breast cancer [1]. Here's a breakdown of its key features:
What is Lapatinib used for?
Lapatinib is used to treat HER2-positive breast cancer. HER2 stands for Human Epidermal Growth Factor Receptor 2, a protein that can fuel the growth of some breast cancers [1, 2]. Lapatinib is typically prescribed in combination with other chemotherapy medications for:
- Advanced or metastatic breast cancer: This refers to cancer that has spread beyond the breast to other parts of the body [2].
- Early-stage HER2-positive breast cancer: In some cases, lapatinib may be used with other medications after surgery to reduce the risk of cancer recurrence [2].
How does Lapatinib work?
Lapatinib belongs to a class of drugs called tyrosine kinase inhibitors (TKIs) [1]. It works by blocking the activity of HER2 receptors on the surface of cancer cells. By inhibiting these receptors, Lapatinib disrupts the signals that tell cancer cells to grow and divide [2, 3]. This can help slow down the growth and spread of HER2-positive breast cancer.
Dosage and Administration:
Lapatinib comes as a tablet taken orally, usually once a day, with or without food [1]. It's important to follow your doctor's instructions regarding dosage and duration of treatment.
Important things to remember:
- Lapatinib is a prescription medication and should only be taken under the supervision of a doctor.
- It can cause side effects, including diarrhea, rash, fatigue, nausea, and mouth sores [2].
- Lapatinib may affect liver function, so your doctor will likely monitor your liver enzymes with regular blood tests [2].
- This medication can interact with other drugs. Be sure to tell your doctor about all the medications you are taking before starting Lapatinib treatment [2].
- Lapatinib can harm an unborn baby. Women who are pregnant or planning to become pregnant should not take Lapatinib [2].