The universally accepted first-line treatment for advanced (stage IIIB effusion/IV) non-small-cell lung cancer in patients with a good performance status is a platinum drug in combination with one of gemcitabine, paclitaxel, vinorelbine or docetaxel. Although cisplatin is generally the favoured platinum agent, gemcitabine partnered with carboplatin is convenient to administer and has a favourable toxicity profile. Here, the pharmacology, preclinical and clinical data to support the use of this regimen for the treatment of advanced non-small-cell lung cancer is evaluated.