DMSO Dual-Route Therapy for Tinnitus in Long-COVID and Post-COVID-19 Vaccine Injury

This study is testing a new approach for adults with bothersome tinnitus (ringing in the ears) that started after long-COVID or a COVID-19 vaccine, and hasn't improved with other treatments. All 20 participants will receive two treatments for 30 days: an ear solution containing dimethyl sulfoxide (DMSO), betahistine, dexamethasone, and lidocaine, and a skin cream with DMSO, levocarnitine, and N-acetylcysteine. The ear solution is used every four days, and the cream is applied daily around the ears and neck. The main goal is to see if at least half of the participants experience a 50% or more reduction in their Tinnitus Handicap Inventory (THI) score, which measures how much tinnitus affects their daily life.

Study design
This is a single-arm, open-label pilot study, meaning all 20 participants will receive the same treatments, and everyone involved will know what treatments are being given.
What's involved
You would receive an ear solution every four days for a total of 8 applications over 30 days, and apply a cream once daily at bedtime for 30 days.
Compensation
Not stated in the trial record.
Follow-up
The primary outcome is measured at Day 30, which is the end of the treatment period.

AI-generated from the public study record. Only the study team can confirm whether you're eligible — confirm details with them before making decisions.

NCT07567274

DMSO Dual-Route Therapy for Refractory Tinnitus in Long-COVID and Post-COVID-19 Vaccine Injury

Enrolling by Invitation
PHASE2Ages 18–70InterventionalTreatment
Leading Edge Clinic
~20 participants
Updated 2026-05-13 on ClinicalTrials.gov
What's tested:DMSO-based otic solution with betahistine, dexamethasone, and lidocaineDMSO-based transdermal cream with levocarnitine and N-acetylcysteine

At a glance

Recruiting sites
0 of 1 listed site is recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Proportion of participants with at least 50% reduction in Tinnitus Handicap Inventory (THI) score
Measured over Baseline to Day 30
Tinnitus
1 sites across 1 states
New York1
  • Scott D Marsland, MS Nursing · PRINCIPAL_INVESTIGATOR · Leading Edge Clinic

This trial hasn't published a contact. View it on ClinicalTrials.gov

  • Proportion of participants with at least 50% reduction in Tinnitus Handicap Inventory (THI) scoreBaseline to Day 30

    The Tinnitus Handicap Inventory (THI) is a 25-item validated questionnaire (total score 0-100) that measures tinnitus-related handicap. Responders are defined as participants with a reduction of at least 50% in total THI score from baseline to Day 30.