Xylocaine 10% Spray 50 ml is used to induce temporary loss of sensation in a part of the body before such forms of tests and instruments are performed by your doctor, e.g. your lungs. Can also help avoid procedures from coughing or gagging. To help reduce discomfort associated with mild surgery in the ear, nose and throat. To help reduce pain during puncture of the upper jaw cavity (the maxillary sinus) To help avoid pain and discomfort in the dentist, e.g. before injection