Tepezza® linked to hearing loss: Who’s affected?
If you were prescribed Tepezza® and were not warned about the risk of hearing loss, you may qualify to join a Tepezza® class action lawsuit.
Patients report experiencing temporary or even permanent hearing impairment after taking the thyroid eye disease drug, and lawsuits allege that Horizon Therapeutics failed to adequately disclose these risks. Fill out the form on this page to learn more.
Patients taking Tepezza® for thyroid eye disease have reported serious hearing problems, including tinnitus, hearing loss and even permanent deafness. Lawsuits allege that Horizon Therapeutics failed to properly warn about these risks.
Before starting any treatment, patients have the right to be informed of all potential side effects. If you took Tepezza® and experienced hearing loss, you may be eligible to join a Tepezza® lawsuit and pursue compensation. Submit a free, confidential claim review today.
Do you qualify for a Tepezza® lawsuit?
If you experienced hearing loss after using Tepezza®, you may be eligible to join a Tepezza® hearing loss lawsuit. This unexpected and life-altering side effect has left many patients struggling with permanent changes in their health they were never warned about. Legal action may help you recover financial compensation for the impact this has had on your daily life.
Fill out the form on this page for more information.
What is the Tepezza® lawsuit about?
The Tepezza® lawsuit multidistrict litigation (MDL) centers around claims that Horizon Therapeutics failed to warn patients that its thyroid eye disease drug, Tepezza®, could cause permanent hearing loss and tinnitus. The first Tepezza® lawsuit was filed in 2022 by an Illinois man who alleged he suffered irreversible hearing damage after receiving Tepezza® infusions. Since then, many more patients have come forward with similar claims.
As of June 2025, 221 lawsuits were pending in the Tepezza® MDL. While the MDL remains relatively small, it has grown steadily over the past year and is now entering a critical phase.
Four bellwether trials are scheduled to begin in 2026, with the first set for April. These early test trials are intended to gauge how judges and juries may respond to evidence and testimony. Both sides are actively working through discovery and narrowing down case selections. These trials could influence future settlement negotiations.
How is Tepezza® linked to hearing loss?
Initial clinical trials used to approve Tepezza® reported hearing problems in about 10% of patients. However, later research suggests the risk may be significantly higher. A 2021 study presented at the Endocrine Society’s annual meeting found that 65% of patients treated with Tepezza® experienced some form of hearing issue.
Reported symptoms included:
- Hearing loss (23%)
- Tinnitus or ringing in the ears (27%)
- Sensation of ear plugging (12%)
- Autophony—an unusually loud perception of one’s own voice (29%)
The study also reported Tepezza® could cause various types of hearing loss. Some patients experienced sensorineural hearing loss resulting from damaged inner ear hair cells. Others had patulous eustachian tube, a disorder where the channel between the middle ear, nose and throat remains constantly open instead of only opening to regulate ear pressure.
In some patients, hearing loss proved to be permanent, with symptoms persisting even three months after discontinuing the drug.
A February 2022 post-marketing safety analysis by Horizon Therapeutics confirmed these risks, despite earlier trials indicating a lower rate of hearing-related side effects (9.5%).
As a result, the FDA approved a Tepezza® label change in July 2023. The updated warning now includes “hearing impairment including hearing loss, which in some cases may be permanent.”
Submit a free Tepezza® claim review
Although the 2023 Tepezza® label update offers better warnings, patients treated before this change may still have legal options. Many individuals were not informed of the risk of hearing loss and, as a result, were unable to provide fully informed consent.
If you received Tepezza® prior to the updated warning and experienced hearing issues, you may qualify to join a Tepezza® hearing loss lawsuit to seek compensation for your injuries.
Fill out the form on this page to see if you qualify for a free case evaluation.
See If You Qualify
Join a Tepezza® lawsuit investigation
Filling out this form is quick and easy. It only takes a few minutes to see if you qualify.
After you fill out the form, an attorney(s) or their agent(s) may contact you to discuss your legal rights.
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