Information about Lapatinib

    Lapatinib uses

    Lapatinib is used in the treatment of Breast cancer.

    How lapatinib works

    In patients with cancer, a change in DNA (genetic material) triggers a signal which produces abnormal cancer cells. Lapatinib blocks this signal, and thus stops the production of these cancer cells.

    Common side effects of lapatinib

    Nausea, Headache, Back pain, Breathing difficulty, Rash, Joint pain, Pain in extremity, Insomnia (difficulty in sleeping), Vomiting, Abdominal pain, Loss of appetite, Dyspepsia, Hot flushes, Diarrhoea, Cough, Nose bleed, Constipation, Stomatitis (Inflammation of the mouth)

    Available Medicine for Lapatinib

    No medicine available

    Expert advice for Lapatinib

    • Before taking Lapatinib, tell your doctor, if you have heart disease such as heart failure or had a heart attack. You may need to undergo cardiac function tests prior to initiation of treatment and during treatment with Lapatinib to monitor your condition.
    • Lapatinib may cause liver damage which can be severe or life-threatening. Tell your doctor if you have or ever had liver disease.
    • Take precautions as Lapatinib often causes diarrhea, which can be severe.
    • You should be monitored for symptoms of pulmonary toxicity (dyspnea, cough, fever) and treatment should be discontinued if you experience severe symptoms.
    • You must use a reliable method of contraception to avoid becoming pregnant while on Lapatinib.
    • Do not drive or operate machinery as Lapatinib may cause extreme tiredness/weakness.

    Frequently asked questions for Lapatinib


    Q. Is Lapatinib cytotoxic/ chemotherapy?
    Lapatinib is not cytotoxic and not a chemotherapy drug
    Q. Is Lapatinib a monoclonal antibody?
    Lapatinib is not a monoclonal antibody.

    Content on this page was last updated on 15 February, 2017, by Dr. Varun Gupta (MD Pharmacology)