Crizotinib Products | Cleanchem - Crizotinib is a targeted cancer therapy used to treat non-small cell lung cancer (NSCLC) that harbors ALK or ROS1 gene rearrangements. It functions as a tyrosine kinase inhibitor, blocking pathways essential for cancer cell growth. It is taken orally and has significantly improved outcomes in certain genetic subsets of lung cancer. Common side effects include visual disturbances, nausea, and elevated liver enzymes.