You must use effective birth control throughout your treatment as Tarceva is harmful to the unborn baby; if you are already pregnant then do not begin taking this oncology drug.
It is not known whether Erlotinib is excreted in human milk. Because of the potential harm to the infant, mothers should be advised against breastfeeding while receiving Tarceva.
Patients will need regular blood tests whilst you are taking Tarceva to ensure that it is working effectively, and no unnoticed harmful effects are occurring.
Avoid exposure to sunlight or tanning beds. Erlotinib can cause skin rash, dryness, or other irritation. Wear protective clothing and use sunscreen when you are outdoors. Avoid using skin products that can cause dryness or irritation.
Tarceva is a strong medication. If you have more than the required quantity it may result in other health problems. If you overdose on Tarceva and experience problems like difficulty in breathing, increased blood pressure, irregular heart beat or plain vomiting and nausea you must contact your healthcare provider.
You must not smoke whilst taking Tarceva and you must tell your doctor if you have lung problems, kidney or liver disease, heart problems and any health issues.
You must also stop taking this cancer medicines right away if you notice changes in your bathroom habits such as going more frequently or not at all, or blood in your stools.
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 may also react with Ketoconazole, Atazanavir, Clarithromycin, Indinavir, Itraconazole, St. John’s wort, Nefazodone, Nelfinavir, Ritonavir, Telithromycin or Voriconazole. Other inducers include Rifabutin, Rifapentine, Phenytoin, Carbamazepine, Phenobarbital.