GradedHealth

Can tongue stimulation ease tinnitus? What the Lenire trials found

Sound plus mild tongue stimulation cut tinnitus handicap in large trials, with gains lasting up to a year. The catch: the later trials were company-linked.

Published October 2026

Short answer

Early evidence says it can help people with moderate or worse tinnitus, with gains lasting up to a year. The main trials were company-linked, so treat the results as promising, not settled. Evidence grade C (Limited). Randomised and controlled-comparison trials show benefit, but the later trials are linked to the device maker and none used an inactive device; downgraded for risk of bias.

Key takeaways

  • In a trial of 326 adults with chronic tinnitus, sound paired with tongue stimulation cut tinnitus handicap scores over 12 weeks, and some settings kept the gains for 12 months [1].
  • In people with moderate or worse tinnitus, 58.6% improved meaningfully with the combination versus 43.2% with sound alone [2].
  • Clinic chart reviews saw similar gains in moderate or worse tinnitus, and one found almost no change in slight or mild tinnitus [3][4].
  • No device-related serious adverse events were reported; side effects were mild, such as jaw pain, tooth sensitivity and dry mouth [5][2].
  • The controlled trial involved the device maker, and sound alone also helped many people [2].

What the studies did

The Lenire device plays sound through headphones while a small electrode gives mild electrical pulses to the tongue, for up to an hour a day over 12 weeks [1][2]. Three sets of data matter. The first two are randomised trials of 326 adults with chronic tinnitus [1] and a follow-up trial testing different settings [5]. The third is a trial of 112 adults who each had 6 weeks of sound only, then 6 weeks of sound plus tongue stimulation [2].

What they found

In the 326-person trial, all three settings reduced tinnitus handicap, and for specific settings the benefit continued for 12 months [1]. The second trial confirmed this, with effects sustained up to 12 months and 83.8% of people using the device as directed [5].

The 112-person trial is the closest thing to a controlled test. In people with moderate or worse tinnitus, 58.6% improved by more than 7 points on the handicap inventory with the combination, against 43.2% with sound alone [2]. 62.9% said they felt a benefit [2].

How it fits

A 2026 meta-analysis of 26 randomised trials of brain-stimulation treatments put bimodal stimulation (4 trials, 582 people) ahead for consistent, lasting improvement, while magnetic and direct-current scalp stimulation did not reach a significant pooled effect [6]. Two clinic chart reviews saw improvement in 82% to 92% of moderate-or-worse patients, but with no comparison group [3][4]. For comparison, CBT for tinnitus has the strongest evidence for reducing how much tinnitus affects daily life [7].

Limits

The second randomised trial, the controlled trial and a chart review involve authors who work for, advise or hold shares in the device maker, or who provide the treatment [5][2][3]. The first large trials compared active settings against each other, not against an inactive device [1]. Sound alone helped 43% of people [2], and in the full group including mild tinnitus the extra benefit was not seen [2]. People with pulsatile tinnitus, Meniere's disease, jaw-joint disorders, implanted electrical devices, or who were pregnant were excluded, so safety for them is unknown [2]. See tongue stimulation for tinnitus for the full safety notes.

Go deeper

  • Tongue Stimulation for Tinnitus — Pairing sound with mild electrical stimulation of the tongue (the Lenire device) lowered tinnitus handicap scores in large trials, and the gains lasted up to 1…
  • CBT for Tinnitus — Cognitive behavioural therapy (CBT) is the best-supported way to reduce how much tinnitus affects daily life: in a Cochrane review of 28 trials it lowered tinn…

References

  1. Bimodal neuromodulation combining sound and tongue stimulation reduces tinnitus symptoms in a large randomized clinical study.. Sci Transl Med, 2020.
  2. Combining sound with tongue stimulation for the treatment of tinnitus: a multi-site single-arm controlled pivotal trial.. Nat Commun, 2024.
  3. Retrospective chart review demonstrating effectiveness of bimodal neuromodulation for tinnitus treatment in a clinical setting.. Commun Med (Lond), 2025.
  4. Bimodal Neuromodulation for Tinnitus in a Clinical Practice Setting: Clinically Significant Benefit for Patients With Moderate or Worse Symptoms.. Am J Audiol, 2026.
  5. Different bimodal neuromodulation settings reduce tinnitus symptoms in a large randomized trial.. Sci Rep, 2022.
  6. Neuromodulation for Subjective Tinnitus: A Systematic Review and Meta-Analysis of Randomized Trials.. Laryngoscope, 2026.
  7. Cognitive behavioural therapy for tinnitus.. Cochrane Database Syst Rev, 2020.