Die vorliegende Erfindung betrifft die Verwendung von kompatiblen Soluten zur Prävention und/oder Behandlung von viral bedingten Atemwegserkrankungen. Die Gruppe der in der Erfindung genannten kompatiblen Solute umfasst verschiedene niedermolekulare Substanzen, nämlich Ectoin, 4,5,6,7-Tetrahydro-2-methyl-1H-[1,3]-diazepin-4-S-carbonsäure (Homoectoin), Hydroxyectoin, Dimyo-Inositolphosphat (DIP), cyclisches 2,3-Diphosphoglycerat (cDPG), 1,1-Di-Glycerinphosphat (DGP), ß-Mannosylglycerat (Firoin), ß-Mannosylglyceramid (Firoin-A), Di-mannosyl-di-inositolphosphat (DMIP), Glucosylglycerin, Taurin, Betain, Citrullin und/oder Derivate, z.B. Säuren, Salze oder Ester dieser Verbindungen.The present invention relates to the use of compatible solutes for the prevention and / or treatment of respiratory viral diseases. The group of compatible solutes mentioned in the invention comprises various low-molecular substances, namely ectoine, 4,5,6,7-tetrahydro-2-methyl-1H- [1,3] -diazepine-4-S-carboxylic acid (homoectin), Hydroxyectoine, dimyo-inositol phosphate (DIP), cyclic 2,3-diphosphoglycerate (cDPG), 1,1-di-glycerol phosphate (DGP), β-mannosylglycerate (firoin), β-mannosylglyceramide (Firoin-A), di-mannosyl- di-inositol phosphate (DMIP), glucosylglycerol, taurine, betaine, citrulline and / or derivatives, eg Acids, salts or esters of these compounds.