What is Tarceva (Erlotinib)?

Erlotinib is a cancer medication that interferes with the growth of cancer cells and slows their spread in the body.
Erlotinib is used to treat non-small cell lung cancer. Erlotinib is also used in combination with other cancer medicine to treat pancreatic cancer.
Erlotinib may also be used for purposes not listed in this medication guide.

What is the most important information I should know about Tarceva (Erlotinib)?

Do not take erlotinib if you are pregnant. It could harm the unborn baby. Use effective birth control while you are taking this medication and for at least 2 weeks after your treatment ends.
Before taking erlotinib, tell your doctor if you have lung problems (other than lung cancer), kidney or liver disease, if you are dehydrated, or if you smoke.
To be sure this medication is helping your condition and not causing harmful effects, your blood will need to be tested often. This will help your doctor determine how long to treat you with erlotinib. Visit your doctor regularly.
Avoid exposure to sunlight or tanning beds. Erlotinib can cause skin rash, dryness, or other irritation. Wear protective clothing and use sunscreen (SPF 30 or higher) when you are outdoors. Avoid using skin products that can cause dryness or irritation.
Stop taking erlotinib and call your doctor at once if you have new or worsening lung problems (chest pain, dry cough with fever, wheezing, feeling short of breath), chest pain spreading to the arm or shoulder, sudden numbness or weakness, eye pain or irritation, rapid weight gain, urinating less than usual or not at all, severe or ongoing diarrhea or vomiting, coughing up blood, black or bloody stools, pale skin, easy bruising or bleeding, mouth sores, or a severe skin rash.
There are many other drugs that can interact with erlotinib. Tell your doctor about all medications you use. Keep a list of all your medicines and show it to any healthcare provider who treats you.

What should I discuss with my healthcare provider before taking Tarceva (Erlotinib)?

You should not take erlotinib if you are allergic to it.
If you have any of these other conditions, you may need a dose adjustment or special tests:

• lung or breathing problems (other than lung cancer)
• kidney disease
• liver disease
• if you are dehydrated; or
• if you smoke

FDA pregnancy category D. Do not take erlotinib if you are pregnant. It could harm the unborn baby. Use effective birth control while you are taking this medication and for at least 2 weeks after your treatment ends.
It is not known whether erlotinib passes into breast milk or if it could harm a nursing baby. You should not breast-feed while taking erlotinib.

Tarceva Side Effects

What are the possible side effects of Tarceva (Erlotinib)?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Stop taking erlotinib and call your doctor at once if you have a serious side effect such as:

• new or worsening lung problems such as chest pain, dry cough with fever, wheezing, rapid breathing, feeling short of breath
• chest pain spreading to the arm or shoulder, nausea, sweating, general ill feeling
• sudden numbness or weakness, sudden severe headache, or problems with vision, speech, or balance
• eye pain, redness, or irritation
• confusion, mood changes, increased thirst, urinating less than usual or not at all
• swelling, rapid weight gain
• severe or ongoing diarrhea, vomiting, or loss of appetite
• black, bloody, or tarry stools
• coughing up blood or vomit that looks like coffee grounds
• pale or yellowed skin, easy bruising, unusual bleeding (nose, mouth, vagina, or rectum), purple or red pinpoint spots under your skin
• white patches or sores inside your mouth or on your lips
• fever, sore throat, and headache with a severe blistering, peeling, and red skin rash
• the first sign of any type of skin rash, no matter how mild; or
• nausea, upper stomach pain, itching, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes)

Less serious side effects may include:

• mild stomach upset, nausea, or diarrhea
• weight loss
• acne, dry skin; or
• tired feeling

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.

Tarceva Interactions

What other drugs affect Tarceva (Erlotinib)?

Many drugs can interact with erlotinib. Below is just a partial list. Tell your doctor if you are using:

• a blood thinner such as warfarin (Coumadin)
• bosentan (Tracleer)
• conivaptan (Vaprisol)
• dexamethasone (Decadron, Hexadrol)
• imatinib (Gleevec)
• isoniazid (for treating tuberculosis)
• St. John’s wort
• steroid medicine (prednisone and others)
• an antibiotic such as ciprofloxacin (Cipro), clarithromycin (Biaxin), dalfopristin/quinupristin (Synercid), erythromycin (E.E.S., EryPed, Ery-Tab, Erythrocin), rifabutin (Mycobutin), rifampin (Rifadin, Rifater, Rifamate), rifapentine (Priftin), or telithromycin (Ketek)
• an antidepressant such as nefazodone
• antifungal medication such as clotrimazole (Mycelex Troche), itraconazole (Sporanox), ketoconazole (Extina, Ketozole, Nizoral, Xolegal), or voriconazole (Vfend)
• a barbiturate such as butabarbital (Butisol), secobarbital (Seconal), pentobarbital (Nembutal), or phenobarbital (Solfoton)
• heart or blood pressure medication such as diltiazem (Cartia, Cardizem), felodipine (Plendil), nifedipine (Nifedical, Procardia), verapamil (Calan, Covera, Isoptin, Verelan), and others
• HIV/AIDS medicine such as atazanavir (Reyataz), delavirdine (Rescriptor), efavirenz (Sustiva), etravirine (Intelence), fosamprenavir (Lexiva), indinavir (Crixivan), nelfinavir (Viracept), nevirapine (Viramune), ritonavir (Norvir), or saquinavir (Invirase)
• medicines to treat narcolepsy, such as armodafanil (Nuvigil) or modafanil (Progivil)
• NSAIDs (non-steroidal anti-inflammatory drugs) such as aspirin, ibuprofen (Motrin, Advil), diclofenac (Cataflam, Voltaren), etodolac (Lodine), indomethacin (Indocin), meloxicam (Mobic), nabumetone (Relafen), naproxen (Aleve, Naprosyn), piroxicam (Feldene), and others; or
• seizure medication such as carbamazepine (Carbatrol, Tegretol), felbamate (Felbatol), oxcarbazepine (Trileptal), phenytoin (Dilantin), or primidone (Mysoline)

This list is not complete and there are many other drugs that can interact with erlotinib. Tell your doctor about all medications you use. This includes prescription, over-the-counter, vitamin, and herbal products. Do not start a new medication without telling your doctor. Keep a list of all your medicines and show it to any healthcare provider who treats you.

What should I avoid while taking Tarceva (Erlotinib)?

Avoid exposure to sunlight or tanning beds. Erlotinib can cause skin rash, dryness, or other irritation. Wear protective clothing and use sunscreen (SPF 30 or higher) when you are outdoors.
Avoid using skin products that can cause dryness or irritation, such as acne medications, harsh soaps or skin cleansers, or skin products that contain alcohol.
Grapefruit and grapefruit juice may interact with erlotinib 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.

Tarceva Dosage

How should I take Tarceva (Erlotinib)?

Take exactly as prescribed by your doctor. Do not take in larger or smaller amounts or for longer than recommended. Follow the directions on your prescription label.
Your doctor may occasionally change your dose to make sure you get the best results.
Take erlotinib on an empty stomach, at least 1 hour before or 2 hours after eating.
To be sure this medication is helping your condition and not causing harmful effects, your blood will need to be tested often. This will help your doctor determine how long to treat you with erlotinib. Visit your doctor regularly.
Store at room temperature away from moisture and heat.

What happens if I overdose on Tarceva (Erlotinib)?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.
Overdose symptoms may include severe diarrhea, severe skin rash, dark urine, stomach pain, or jaundice (yellowing of your skin or eyes).

What happens if I miss a dose of Tarceva (Erlotinib)?

Take the missed dose as soon as you remember (take only on an empty stomach). Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose.
Edited from everydayhealth.com