Clinical Research Directory

Acute Nicotine Gum and Tinnitus Loudness in Non-Smoking Adults

Sponsor: San Diego State University

Summary

This study tested whether a single dose of nicotine gum can reduce the loudness of tinnitus (ringing in the ears) in non-smoking adults with chronic tinnitus. Nicotine acts on brain nicotinic acetylcholine receptors that regulate the balance of excitation and inhibition in auditory and attention networks, and may temporarily quiet the phantom sound while improving the ability to focus on relevant sounds. Using a double-blind, placebo-controlled, within-subject crossover design, each participant attended two sessions and received a single 4 mg dose of nicotine polacrilex gum at one session and a flavor-matched placebo gum at the other, in random order. The primary measure was the within-session change in a psychoacoustic match of tinnitus loudness; auditory selective attention was a secondary measure.

Official title: A Randomized, Double-Blind, Placebo-Controlled, Within-Subject Crossover Trial of a Single 4 mg Dose of Nicotine Polacrilex Gum on Psychoacoustic Tinnitus Loudness and Selective Attention in Non-Smoking Adults With Chronic Subjective Tinnitus

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