Data for: Effects of oral zinc supplementation on patients with noise-induced hearing loss associated tinnitus: A clinical trial

This study enrolled patients who visited our ENT out-patient department with the primary complaint of tinnitus more than 6 months. A full medical history assessment was performed, and each patient underwent an otoscopic examination, a basic audiologic evaluation. A full medical history assessment was performed, and each patient completed the NIHL questionnaire (Supplementary S1), audiogram, tympanogram, speech discrimination test, distortion product otoacoustic emissions (DPOAE) testing, pitch and loudness match of the tinnitus, Tinnitus Handicap Inventory (THI) and serum zinc level analyses. All tests were repeated after 2 months of treatment with zinc gluconate (Zinga 78 mg, 10 mg elemental zinc), two tablets twice per day (40 mg per day).