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IMPORTANT: HOW TO USE THIS INFORMATION: This is a summary and does NOT have all possible information about this product. This information does not assure that this product is safe, effective, or appropriate for you. This information is not individual medical advice and does not substitute for the advice of your health care professional. Always ask your health care professional for complete information about this product and your specific health needs.
LAPATINIB - ORAL
COMMON BRAND NAME(S): Tykerb
WARNING: Rarely, people taking lapatinib have developed serious (possibly fatal) liver problems. Your doctor will perform liver function tests before and during treatment to monitor for this side effect. Keep all medical/lab appointments. Tell your doctor immediately if you develop symptoms of liver disease such as persistent nausea, stomach/abdominal pain, dark urine, or yellowing eyes/skin. Do not restart this medication if you have previously stopped taking it due to liver problems.
USES: Lapatinib is used together with another medication (capecitabine) to treat a certain type of breast cancer (HER2-positive) that has not responded to the standard treatment. Lapatinib may also be used together with another medication (letrozole) to treat HER2-positive breast cancer in women after menopause. It works by slowing or stopping the growth of cancer cells.
HOW TO USE: Read the Patient Information Leaflet provided by your pharmacist before you start using lapatinib and each time you get a refill. If you have any questions, consult your doctor or pharmacist.
Take this medication by mouth 1 hour before or 1 hour after a meal, usually once daily or as directed by your doctor. It is important that you do not take this medication more than once daily.
The dosage is based on your medical condition, response to treatment, and certain other drugs you may be taking.
Do not increase your dose or take this medication more often than prescribed. Your condition will not improve any faster, and the risk of serious side effects may be increased.
Avoid eating grapefruit or drinking grapefruit juice while being treated with this medication unless your doctor instructs you otherwise. Grapefruit can increase the amount of certain medications in your bloodstream. Consult your doctor or pharmacist for more details.
Since this drug can be absorbed through the skin and lungs, women who are pregnant or who may become pregnant should not handle this medication or breathe the dust from the tablets.
Follow your doctor's instructions on how to correctly take capecitabine or letrozole with lapatinib.
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