Murine hayfever eye drops contains the active ingredient sodium cromoglicate of which belongs to a group of medicine called antiallergies sodium cromoglicate is used for the relief and treatment of the eye symptoms caused by hay fever murine hayfever eye drops works by reducing the bodys response to the allergy when used regularlyhay fever symptoms normally happen in late spring or early summer when pollen from grass and trees comes into contact with people if you suffer from hay fever you m