Efficacy, Safety and Tolerability of Neramexane in Comparison to Placebo in Patients With Subjective Tinnitus

Inclusion Criteria: * patients aged 18 to 75 years with a clinical diagnosis of first onset, persistent (i.e. tinnitus sghould never be absent for \>24 hours in a row), subjective, uni-or bilateral tinntius present for at least 3 months but not more than 12 months. Exclusion Criteria: * Clinical diagnosis of intermittent or pulsatile tinnitus * Patients who have tinnitus as a concomitant symptom of an otological/neurological disease(such as otitis media, Meniére´s disease, otosclerosis, etc.)