Xovoltib 40 mg Tablet is an anticancer drug that contains afatinib dimaleate It is used to treat non small cell lung cancer in adult patients with specific mutations of epidermal growth factor receptor EGFR This medicine works by inhibiting proteins involved in the growth and spread of cancer cells leading to the downregulation of protein signaling and inhibition of proliferation in EGFR overexpressing cancer cells Xovoltib 40 mg Tablet should be taken on an empty stomach preferably at the same time every day Follow your doctors instructions regarding the dosage and frequency of administration Inform your doctor about all other medications you are taking