I am a lung cancer survivor. Was diagnosed with lung cancer a year ago September and have been on Tarceva for about a year. Would like to hear from anyone who currently is on this medication, had been, for how long, side effects and if you were switched to another drug? I was told Tarceva is effective for 12-18 months but at about one year there is a percentage of people for whom the Tarceva starts becoming ineffective. But by the same token there is a percentage of people that Tarceva continues to be effective. Where am I? Who knows? But any thoughts shared on this will be appreciated.