Licensed from

lapatinib (generic name)

Tykerb (brand name)

(la PA ti nib): A tyrosine kinase inhibitor - It targets specific enzymes within cancer cells and stops the cancer cells from growing
of 2

Lapatinib Oral tablet

What is this medicine?

LAPATINIB (la PA ti nib) is a chemotherapy drug. It targets specific enzymes within cancer cells and stops the cancer cells from growing. This medicine is used to treat some advanced breast cancers. It is often used along with other cancer treatments.

This medicine may be used for other purposes; ask your health care provider or pharmacist if you have questions.

What should I tell my health care provider before I take this medicine?

They need to know if you have any of these conditions:

How should I use this medicine?

Take this medicine by mouth with a glass of water. Take this medicine on an empty stomach, at least 1 hour before or after a meal. Do not take with food. Follow the directions on the prescription label. Do not take your medicine more often than directed. Do not stop taking except on your doctor's advice.

A patient information sheet for the product will be given with each prescription and refill. Read this sheet carefully each time. The sheet may change frequently.

Talk to your pediatrician regarding the use of this medicine in children. Special care may be needed. This medicine is not approved for use in children.

Overdosage: If you think you have taken too much of this medicine contact a poison control center or emergency room at once.
NOTE: This medicine is only for you. Do not share this medicine with others.

What if I miss a dose?

If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses.

What may interact with this medicine?

Do not take this medicine with any of the following:
  • grapefruit or grapefruit juice

This medicine may also interact with the following medications:

This list may not describe all possible interactions. Give your health care provider a list of all the medicines, herbs, non-prescription drugs, or dietary supplements you use. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine.

of 2

Last Updated

June 24, 2009

Follow Yahoo Health on and become a fan on

Follow @YahooHealth on