Abstract: The present invention relates to a compound according to formula (I) Formula (I) a physiologically acceptable salt, a solvate, or a hydrate thereof for use in the prevention and/or treatment of diseases caused by betacorona-virus infection in a mammalian subject, such as a human, wherein said compound is administered by inhalation as a pharmaceutical composition comprising preferably alcohol as a carrier. A preferred example is viral infection caused by SARS.