OTOREX EAR DROPS 10MLOtorex ear drops contains Benzocaine, Turpentine Oil, Chlorbutol, and Paradichlorobenzene.Uses. For the relief of ear pain. Otorex contains Bennzocaine which is a local anaesthesia that helps relieve ear pain.Softening of earwax. Otorex has Paradichlorobenzene which softenes har..