Aspergillus fumigatus is the most common and pathogenic species of Aspergillus.Aspergillus fumigatus usually infects immunocompromised patients, in these patients it has a comparatively high death rate when causing IPA. Antifungals advised for treatment of patients with invasive pulmonary aspergillosis (IPA). We studied the susceptibility of Aspergillus fumigatus to the agent LM1.