An anti-infection solution including (i) from 10% to 30% by weight with respect to the total volume of the solution of at least one compound of Formula (I): wherein: X represents a hydrogen or halogen atom or a hydroxy function, R1 represents: a 1-piperazinyl radical, which may be substituted in position 4 by a methyl, acetyl or 4-aminobenzyl group; a morpholino radical: a 1-pyrrolidinyl radical substituted in position 3 by a chlorine atom or by an amino, aminomethyl, (methylamino) methyl, (ethylamino) methyl or methoxy group; a 1-imidazolyl radical that can be substituted in position 4 by the methyl group, or a 1-piperidyl radical substituted in position 4 by a hydroxy or methoxy group, and R2 represents an alkyl radical, linear, branched or ring, including 1 to 10 carbon atoms, or at least one of its pharmaceutically acceptable salts, (ii) benzyl alcohol as a stabilizing agent, and at least one stabilizing agent, and (iii) at least one solubilization agent selected from the group consisting of carbolic acids and their esters, in a pharmaceutically acceptable carrier.