What happens if I miss a dose (Tarceva)?
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.
What happens if I overdose (Tarceva)?
Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.
Overdose symptoms may include severe diarrhea or severe skin rash.
What should I avoid while using erlotinib (Tarceva)?
Avoid taking an antacid within several hours before or after you take 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.
Avoid smoking. It can make erlotinib less effective.
Grapefruit and grapefruit juice may interact with erlotinib and lead to unwanted side effects. Discuss the use of grapefruit products with your doctor.
What other drugs will affect erlotinib (Tarceva)?
Many drugs can interact with erlotinib. Below is just a partial list. Tell your doctor if you are using:
- 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), erythromycin (E.E.S., EryPed, Ery-Tab, Erythrocin, Pediazole), rifabutin (Mycobutin), rifampin (Rifadin, Rifater, Rifamate), rifapentine (Priftin), or telithromycin (Ketek);
- an antidepressant such as nefazodone;
- antifungal medication such as itraconazole (Sporanox), ketoconazole (Nizoral), or voriconazole (Vfend);
- a barbiturate such as butabarbital (Butisol), secobarbital (Seconal), pentobarbital (Nembutal), or phenobarbital (Solfoton);
- a blood thinner such as warfarin (Coumadin, Jantoven);
- heart or blood pressure medication such as nicardipine (Cardene) or quinidine (Quin-G);
- the hepatitis C medications boceprevir (Victrelis) or telaprevir (Incivek);
- HIV/AIDS medicine such as atazanavir (Reyataz), delavirdine (Rescriptor), efavirenz (Sustiva), etravirine (Intelence), fosamprenavir (Lexiva), indinavir (Crixivan), nelfinavir (Viracept), nevirapine (Viramune), ritonavir (Kaletra, Norvir), or saquinavir (Invirase);
- medicines to treat narcolepsy, such as armodafinil (Nuvigil) or modafinil (Progivil);
- NSAIDs (non-steroidal anti-inflammatory drugs) such as aspirin, ibuprofen (Advil, Motrin), naproxen (Aleve, Naprosyn, Naprelan, Treximet), celecoxib (Celebrex), diclofenac (Arthrotec, Cambia, Cataflam, Voltaren, Flector Patch, Pennsaid, Solareze), indomethacin (Indocin), meloxicam (Mobic), 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.
Where can I get more information?
Your pharmacist can provide more information about erlotinib.
Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.
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