A compound of the general formula (I) is provided for use in the topical treatment of infection, inflammation and/or pain: wherein R1 independently represents a methylene group, an ethylene group or a straight or branched chain C3 to C6 alkylene group; R2 independently represents a hydrogen atom, a methyl group, an ethyl group or a straight or branched chain C3 to C20 alkyl group; x represents 0 or an integer from 1 to 4 and y represents 0 or an integer from 1 to 4, wherein the sum of x and y is 4; and Z represents a hydrogen atom or (HOR1)yR2XN+; compositions including the compound; use of the compound in the manufacture of a medicament; and methods of medical treatment including the topical application of the compound.