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Muscle relaxant may alter Ear's defense against loud noises

NCT ID NCT07309354

Knowledge-focused Sponsor: Uşak University Source: ClinicalTrials.gov ↗

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looked at whether the muscle relaxant tizanidine affects the acoustic reflex, which is your ear's natural way of protecting itself from loud sounds. 48 adults who were already taking tizanidine had their hearing and reflex tested before and after one week of treatment. The goal was to see if the medication changes how this reflex works.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

48 people

The number who actually took part.

Started

Jul 2025

Finished

Apr 2026

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 65 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Voluntary participation and ability to provide informed consent * Age 18 years or older * Currently receiving tizanidine 6 mg once daily as part of clinical care * No active middle ear disease that could affect tympanometric or acoustic reflex measurements * No chronic neuromuscular disease * Ability to complete audiological testing Exclusion Criteria: * Refusal to participate * Withdrawal of consent at any time * Age under 18 years * Presence of any ear condition that affects the acoustic reflex (e.g., otitis media, tympanic membrane perforation, otosclerosis) * Presence of chronic neuromuscular disease * Current alcohol or substance use disorder * Any condition preventing completion of acoustic reflex or tympanometry testing

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Conditions

The condition(s) this trial relates to.

hearing loss disorder

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Hearing Reflex, acoustic

Contacts and locations

Locations

  • Uşak University Faculty of Medicine

    Uşak, Merkez, 64420, Turkey (Türkiye)

More trials for these conditions

Other studies related to the condition(s) this trial covers.