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First received: August 12, 2026

Clinical Trial: Acute Nicotine Gum and Tinnitus Loudness in Non-Smoking Adults

Study Status: COMPLETED

Recruit Status: COMPLETED

Condition: Tinnitus
Chronic Subjective Tinnitus

Study Type: INTERVENTIONAL


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-Smoki

Brief 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…

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