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Cancer
    Home > Cancer > Tykerb (Lapatinib)
 

Tykerb (Lapatinib)
Select Ref Description Manufacturer Pack Size Strength Our Price
P1301 Tykerb (Lapatinib) GSK 1 X 10 tabs 250 mg $ 275.45
Price is per pack & not per tab.. eg: if pack size is 10 tabs & price is $2.75 then for 100 tabs the price would be $27.50

What is lapatinib?


Lapatinib is a cancer medication.

Lapatinib is used together with another medicine called capecitabine (Xeloda) to treat a certain type of advanced breast cancer that has spread to other parts of the body.

Lapatinib is usually given after other cancer medications have been tried without successful treatment of symptoms.

Lapatinib may also be used for other purposes not listed in this medication guide.

What is the most important information I should know about lapatinib?


This medication can cause harm to an unborn baby. Do not use lapatinib without your doctor's consent if you are pregnant. Tell your doctor if you become pregnant during treatment. Use an effective form of birth control while you are using this medication.

Before using lapatinib, tell your doctor if you have heart disease, liver disease, or a history of "Long QT syndrome."

Lapatinib is usually taken together with another cancer medicine called capecitabine (Xeloda). Lapatinib is given once daily for 21 days in a row, and capecitabine is given twice daily for only the first 14 days in a row. This 21-day cycle is then repeated, unless your condition gets worse or you have serious side effects.

The usual dose of lapatinib is equal to 5 tablets. You may swallow each tablet one at a time, but take the entire lapatinib dose at the same time each day.

Take lapatinib on an empty stomach, at least 1 hour before or 1 hour after eating.

Be sure to also read the medication guide or patient instructions for capecitabine (Xeloda).

Stop using lapatinib and call your doctor at once if you have serious side effects such as severe diarrhea or vomiting, or uneven heart rate with extreme dizziness or fainting.

Before taking lapatinib, tell your doctor if you are also using antibiotics, ulcer medications, seizure medications, HIV or AIDS medications, herbal supplements, heart or blood pressure medication, or an antidepressant.

What should I discuss with my health care provider before taking lapatinib?
Do not use this medication if you are allergic to lapatinib.

If you have certain conditions, you may need a dose adjustment or special tests to safely use this medication. Before you take lapatinib, tell your doctor if you have:

heart disease;

liver disease; or

a personal or family history of "Long QT syndrome."

FDA pregnancy category D. This medication can cause harm to an unborn baby. Do not use lapatinib without your doctor's consent if you are pregnant. Tell your doctor if you become pregnant during treatment. Use an effective form of birth control while you are using this medication. It is not known whether lapatinib passes into breast milk or if it could harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.

How should I take lapatinib?


Take this medication exactly as it was prescribed for you. Do not take the medication in larger amounts, or take it for longer than recommended by your doctor. Follow the directions on your prescription label.

This medication comes with patient instructions for safe and effective use. Follow these directions carefully. Ask your doctor or pharmacist if you have any questions.

Be sure to also read the medication guide or patient instructions for capecitabine (Xeloda).

Take lapatinib on an empty stomach, at least 1 hour before or 1 hour after eating.

The usual dose of lapatinib is equal to 5 tablets. You may swallow each tablet one at a time, but take the entire lapatinib dose at the same time each day.

Lapatinib is usually taken together with capecitabine in a 21-day cycle. Lapatinib is given once daily for all 21 days in a row, and capecitabine is given twice daily for only the first 14 days of the cycle. This 21-day cycle is then repeated until your doctor decides that lapatinib is no longer an appropriate treatment for your condition. Follow your doctor's instructions.

Take this medication for the entire length of time prescribed by your doctor. Lapatinib is usually continued unless your condition gets worse or you have serious side effects.

To be sure this medication is not causing harmful effects, your liver function will need to be checked with blood tests on a regular basis. Do not miss any scheduled appointments.

Store lapatinib at room temperature away from moisture and heat.

What happens if I miss a dose?


Take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and take the medicine at your next regularly scheduled time. Do not take extra medicine to make up the missed dose.

What happens if I overdose?


Seek emergency medical attention if you think you have used too much of this medicine.

Symptoms of a lapatinib overdose may include severe diarrhea or vomiting.

What should I avoid while taking lapatinib?


Grapefruit and grapefruit juice may interact with lapatinib and lead to potentially dangerous effects. Discuss the use of grapefruit products with your doctor. Do not increase or decrease the amount of grapefruit products in your diet without first talking to your doctor.

Lapatinib side effects


Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Stop using lapatinib and call your doctor at once if you have any of these serious side effects:

uneven heart rate;

extreme dizziness or fainting;

severe diarrhea;

dry cough, feeling short of breath;

white patches or sores inside your mouth or on your lips; or

nausea, stomach pain, low fever, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes).

Less serious side effects may include

upset stomach, mild diarrhea;

pain or redness on the palms of your hands or the soles of your feet;

tired feeling;

dry skin;

back pain; or

sleep problems (insomnia).

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Lapatinib Dosing Information


Usual Adult Dose for Breast Cancer:

Initial dose: 1250 mg (5 tablets) orally once daily on days 1 through 21 continuously in combination with capecitabine

Lapatinib should be taken at least one hour before or one hour after a meal.

Lapatinib should be taken once daily. The dose of lapatinib should not be divided.

If a daily dose is missed, the patient should not double the dose the next day.

Treatment should be continued until disease progression or unacceptable toxicity occurs.

What other drugs will affect lapatinib?


Tell your doctor about all other medications you use, especially:

cimetidine (Tagamet);

dexamethasone (Decadron, Hexadrol);

rifabutin (Mycobutin);

rifampin (Rifadin, Rifater, Rifamate, Rimactane);

rifapentine (Priftin);

St. John's wort;

an antibiotic such as clarithromycin (Biaxin) or telithromycin (Ketek);

an antifungal medication such as ketoconazole (Nizoral), itraconazole (Sporanox), or voriconazole (Vfend);

an antidepressant such as citalopram (Celexa), escitalopram (Lexapro), fluoxetine (Prozac, Sarafem), fluvoxamine (Luvox), paroxetine (Paxil), or sertraline (Zoloft);

a calcium channel blocker such as amlodipine (Norvasc), diltiazem (Tiazac, Cartia, Cardizem), felodipine (Plendil), nifedipine (Procardia, Adalat), verapamil (Calan, Covera, Isoptin, Verelan), and others;

HIV/AIDS medicine such as indinavir (Crixivan), nelfinavir (Viracept), ritonavir (Norvir), or saquinavir (Invirase, Fortovase); or

seizure medication such as carbamazepine (Carbatrol, Tegretol) or phenobarbital (Luminal, Solfoton).

This list is not complete and there may be other drugs that can interact with lapatinib. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor.

Where can I get more information?


Your pharmacist can provide more information about lapatinib.

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