Known hypersensitivity to local anaesthetics of the amide type, or other components of the jelly. Hypersensitivity to methyl and/or propyl parahydroxybensoate (methyl-/propyl paraben), or to their metabolite para amino benzoic acid (PABA). Formulations of lidocaine containing parabens should be avoided in patients allergic to ester local anaesthetics or their metabolite PABA.