Caspofungin is a new antifungal drug meant for intravenous use. It has been shown to be comparable to other antifungal agents such as amphotericin B and fluconazole for empirical therapy in febrile neutropenic patients, oropharyngeal/esophageal candidiasis and invasive aspergillosis. Its efficacy has also been documented in children in small uncontrolled trials. The biggest assets of caspofungin are its excellent tolerability/safety profile and minimal drug interactions.