Hello,
My spouse received tarceva for her ovarian cancer and it was the only drug to date that decreased her CA-125. Tarceva functions differently then most anti-cancer drugs. However, it can cause negative side effects which are easily avoidable if the doctor is paying attention.
1. Tarceva is metabolized in the liver via the CYP3A4 enzyme system. That may not mean much to you but, drugs like Ciprofloxin or antidepresants (SSRI) interfere with this enzyme and will cause an increase in the tarceva drug levels which will lead to Tarceva toxicity. It can be easily avoided by avoiding these drugs.
2. Tarceva can also decrease your kidney function, drink plenty of water and monitor the creatinine on your standard lab test. Use this link
http://www.intmed.mcw.edu/clincalc/creatinine.html
to monitor your estimated creatinine clearance. Estimated creatinine clearance is very important in monitoring how the kidney is functioning. The higher the number the better.
3. Tarceva toxicity will also cause asthma/cough type symptoms. This too can be avoided by adjusting the dose and using asthma type medications
I hope this information is helpful as we have had personal experience with this drug.
Regards
Jim S.