Absolutely! I did my research first, then presented the information to my doctor. She agreed to up my dosage to 200 mg, but wanted to see me for a follow-up visit much sooner than normal to check for toxicity and see if I receive any benefit from the increased dosage. If not, then I will go back to 150 mg - why have increased side-effects if you receive no further shrinkage, right?!?!?
I posted on here several weeks ago that my side-effects seem to have subsided. And wouldn't you know it, when I go to the doctor's office, the rash is back on my face! My doctor did tell me, as well, that a reduction in side-effects does not mean that Tarceva is no longer working - she said that it is just my body getting accustom to the drug in my system, but it is still working.
Anywho, stay strong and put up a good fight!