Erlotinib can also be addressed by its brand name Tarceva in order to treat NSCLC. This agent has the potential to shrink cancer or block it from growing for a time. This medication comes in a tablet form, which should be administered orally once a day, at least 1 hour before eating, or 2 hours after having your meal. is affordable and comes in different brands available in the market. Always purchase the medicine from WHO-GDP & ISO certified. Pharmacy.