My brother been on Tarceva since April 06.And he just now getting a cough. They say you are suppose to let the doctor know if a cough developes.Paul was diagnosed september 06 stage 3b nsclc. Took chemo and radiation and neither helped him so then they put him on Tarceva.Wish knew what to do about the cough.Is the cough part of the side affects ?Paul did not have a cough until the tarceva.