Abstract
This study examined potential prevention of music-induced temporary threshold shift (TTS) in normal-hearing participants. A dietary supplement composed of β-carotene, vitamins C and E, and magnesium was assessed using a randomized, placebo-controlled, double-blind study design. Dosing began 3 days prior to the music exposure with the final dose consumed approximately 30-min pre-exposure. Post-exposure TTS was measured, with no significant difference as a function of treatment. Distortion product otoacoustic emission amplitudes were suppressed after music exposure in both groups, with no significant difference as a function of treatment. Tinnitus was more likely to be reported by the treatment group, but there were no group differences in perceived loudness or bothersomeness. Taken together, this supplement had no effect on noise-induced changes in hearing. Recommendations for future clinical trials are discussed.
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