The Dangers of Pentosan (Elmiron) Eye Disease

October 7, 2019 / 1:27 pm

If you or someone you love has been taking Pentosan Polysulfate Sodium, commonly referred to by the brand name Elmiron, then you could be at serious risk of eye disease. The nationally-recognized firm Colson Hicks Eidson is now taking clients affected by Elmiron across the country. We have vast experience handling cases against major corporations and are ready to stand up for your rights. Our goal is to fully investigate your case and move to secure the compensation you deserve.

What is Elmiron used for?

Elmiron is the brand name for Pentosan, which is sodium pentosan polysulfate (PPS). This prescription medication is used to treat pain caused by interstitial cystitis, commonly known as “painful bladder syndrome.” This medication has also been prescribed for osteoarthritis in humans, as well as in elderly dogs and horses.

Elmiron was approved by the US Food and Drug Administration (FDA) to treat this disease in 1995 and has sales of more than $150 million a year.

What are the dangers of using Elmiron?

Recently, Elmiron has been linked to a retinal injury called maculopathy. In 2018, Dr. Nieraj Jain, a researcher at the Emory Eye Center at the Emory School of Medicine in Atlanta, GA, alerted the public that taking Elmiron is linked to this eye disease.

Maculopathy a term used to describe conditions that affect the macula, an area of the retina associated with “highly sensitive, accurate vision.” The form of macular degeneration attributed to taking Elmiron is called “pigmentary maculopathy of unknown etiology.”

While symptoms between patients vary, symptoms can include any or all of the following:

  • Parafoveal pigmented deposits: this occurs when the capillaries and small blood vessels around the macula become abnormal and can cause vision loss.
  • Vitelliform deposits: this occurs when round, yellowish lesions form underneath the macula. This is also known as adult pattern macular dystrophy.
  • Retinal pigment epithelium atrophy: this is a common symptom of age-related macular degeneration.

Are there other symptoms related to taking Elmiron?

Elmiron has also been linked to the following symptoms in patients:

  • Bruising
  • Diarrhea
  • Headaches
  • Alopecia (hair loss)
  • Gastroesophageal reflux
  • Skin rash
  • Sleep disorders
  • Rectal bleeding

How can Elmiron be linked to this disease and not other medications?

Elmiron is linked to maculopathy because it is the only FDA-approved medication used to treat interstitial cystitis. Research has shown that retinal cells are accumulating a toxic substance from Pentosan over time.

How long do you have to take Elmiron before problems develop?

There is no direct link to the symptoms in patients taking Elmiron to the length of time they have been taking the medication. The study done by Dr. Jain at the Emory School of Medicine says that all patients in his study showed signs of retinal disease. The youngest person in the study was diagnosed with interstitial cystitis (painful bladder syndrome) at the age of 23. Dr. Jain said that the patient began showing symptoms of vision problems by the age of 30.

What are the most common symptoms linked to Elmiron eye disease?

Emory researchers submitted a study to the American Urology Association Annual Meeting in May of 2019. They said that the most common symptoms they found in patients taking Elmiron included:

  • Difficulty reading
  • Difficulty adapting to dim lighting
  • Vision disturbances or distorted vision
  • Blindness
  • Trouble seeing things up close
  • Eye pain

Is the damage caused by Elmiron reversible?

It is recommended that anyone taking the prescription drug Elmiron undergo a full eye exam regardless of whether they have developed adverse symptoms or not. Remember, there are other symptoms listed above to be aware of that may mask themselves as unrelated to taking Elmiron.

Researchers suggest that the vision-threatening pigmentary maculopathy in these cases is likely irreversible, and vision loss not recoverable. They suggest that the other symptoms of taking Elmiron (hair loss, rectal bleeding) are reversible.

Why is an attorney needed for Elmiron eye disease cases?

If you have used Elmiron and have experienced the symptoms discussed here today, contact the team at Colson Hicks Eidson today. Cases involving prescription drugs can become incredibly complex. The other side is not going to readily accept that their product causes harm, even if they know that is the case.

Prescription drug companies should always be held accountable if they fail to warn patients about potential negative side effects of medication.

Janssen Pharmaceuticals, Inc. is the maker of Elmiron. How long have they known that their prescription drug can lead to severe eye disease? Have they disclosed this information to healthcare professionals so they can make an informed decision with their patients?

At Colson Hicks Eidson, our Elmiron attorneys will get to work investigating your case. We will ensure you are evaluated by a trusted healthcare professional. We will have your medical records examined by an expert medical witness who can properly assess whether your eye disease is linked to taking Elmiron.

While most individuals do not have the capability to take on large corporations by themselves, we have the experience and resources necessary to take on Janssen Pharmaceuticals, Inc.

We are ready to help

If you or a loved one have been affected by Elmiron or Pentosan, please contact Colson Hicks Eidson today. You are not alone in this fight. We have vast experience handling nationwide product liability cases like this, and we are ready to put that experience to work for you. Our goal is to secure the compensation you need if you’ve been affected by Elmiron. This includes:

  • The cost of your current and future medical bills
  • Recovery of income lost if you are unable to work
  • Pain and suffering damages
  • Mental anguish damages
  • Loss of enjoyment of life damages
  • Punitive damages against a company or manufacturer

You did not deserve this. When you need an Elmiron eye disease attorney, you can contact us by clicking here or by calling us at 305-476-7442. We want to offer a free case evaluation, and we would be honored to speak with you. Our compassionate team is standing by.

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Lawdragon recognizes outstanding trial lawyers who stand with clients through life’s toughest challenges—ensuring access to medical care, fighting for rightful compensation, and championing justice that leaves a lasting impact. 

This guide is based on a record number of submissions, combined with journalistic research and vetting by the nation’s leading plaintiff consumer lawyers.

Click here to read the full guide.

About Colson Hicks Eidson

Colson Hicks Eidson is a renowned law firm based in Miami, Florida, that is recognized as one of the top trial firms in the United States. Built on a foundation of nearly 60 years of dedication forging strong client relationships, Colson Hicks Eidson handles local, national, and international litigation, with cases spanning from Miami, Florida, and throughout the United States, to matters in the Caribbean, Central America, South America, and Europe. Learn more at: www.colson.com.

Colson Hicks Eidson is pleased to announce that Zachary Lipshultz has become a partner with the firm.

Dean Colson, managing partner of the firm, commented: “Zach is a valued member of the firm and a respected figure in the South Florida legal community. His practice focuses on complex commercial litigation and products liability matters, representing both plaintiffs and defendants in high-stakes disputes across a wide range of industries. He is known for his strategic judgment, rigorous advocacy, and ability to manage cases involving significant financial exposure and novel legal issues.”

During his six years at Colson Hicks Eidson, Zach has worked with Bob Martinez, Curtis Miner, and other firm partners to secure four nine-figure judgments against Fortune 500 companies, obtain dismissals with prejudice on behalf of multiple Fortune 500 defendants, and successfully represent clients before arbitral, state, and federal forums, at trial and on appeal.

According to Senior Partner Bob Martinez: “Zach has been the indispensable force behind our victories in several high-stakes matters over the past seven years, combining unique legal talent with exceptional dedication and service to our clients.”

“Having spent multiple weeks shoulder-to-shoulder with Zach in trial, I am eager to have him as a teammate on any type of trial we need to suit up for,” added partner Curtis Miner.

Zach joined the firm following a federal judicial clerkship with the Honorable Robert N. Scola, Jr., former United States District Judge for the Southern District of Florida. Zach is a 2016 graduate of the University of Miami School of Law. He completed his undergraduate studies at Oberlin College in 2011 and earned a master’s degree in marine affairs and policy from the University of Miami Rosenstiel School of Marine and Atmospheric Science in 2012.

About Colson Hicks Eidson

Colson Hicks Eidson is a renowned law firm based in Miami, Florida, that is recognized as one of the top trial firms in the United States. Built on a foundation of nearly 60 years of dedication forging strong client relationships, Colson Hicks Eidson handles local, national, and international litigation, with cases spanning from Miami, Florida, and throughout the United States, to matters in the Caribbean, Central America, South America, and Europe. Learn more at: www.colson.com.

Colson Hicks Eidson, a leading trial law firm, is proud to announce its relocation to the Penthouse of the South Tower at Douglas Entrance in Coral Gables. This move marks an important milestone for the firm, which has represented clients in local, national, and international matters for more than 55 years. The new office is located within Douglas Entrance, home to the historic gateway La Puerta del Sol (“The Gate of the Sun”), and is surrounded by Mediterranean-style architecture, lush landscaping, and expansive courtyards. With its picturesque, Spanish-walled-city appearance, Douglas Entrance provides a distinctive office environment in Coral Gables, and the firm’s name will soon adorn the top of the South Tower.

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Colson Hicks Eidson moved into its new space in December 2025 with the assistance of Will Morrison of CBRE. According to Dean, “Will’s expertise, vision, and patience made this deal possible. G. Alvarez Studio ensured that the design of our floor was executed perfectly.”

About Colson Hicks Eidson

Colson Hicks Eidson is a renowned law firm based in Miami, Florida, that is recognized as one of the top trial firms in the United States. Built on a foundation of nearly 60 years of dedication forging strong client relationships, Colson Hicks Eidson handles local, national, and international litigation, with cases spanning from Miami, Florida, and throughout the United States, to matters in the Caribbean, Central America, South America, and Europe. Learn more at: www.colson.com.

We are pleased to announce that three of our partners have been named to the 2026 Lawdragon 500 Leading Lawyers in America guide. Congratulations to Curtis Miner, Julie Braman Kane, and Joseph J. Kalbac Jr.

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About Colson Hicks Eidson

Colson Hicks Eidson is a renowned law firm based in Miami, Florida, that is recognized as one of the top trial firms in the United States. Built on a foundation of nearly 60 years of dedication forging strong client relationships, Colson Hicks Eidson handles local, national, and international litigation, with cases spanning from Miami, Florida, and throughout the United States, to matters in the Caribbean, Central America, South America, and Europe. Learn more at: www.colson.com.

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Click here to read the full edition.

About Colson Hicks Eidson

Colson Hicks Eidson is a renowned law firm based in Miami, Florida, that is recognized as one of the top trial firms in the United States. Built on a foundation of over 50 years of dedication forging strong client relationships, Colson Hicks Eidson handles local, national, and international litigation, with cases spanning from Miami, Florida, and throughout the United States, to matters in the Caribbean, Central America, South America, and Europe. Learn more at: www.colson.com.

Colson Hicks Eidson has been named to the 2026 edition of the “Best Law Firms” by Best Lawyers®, recognized at both the national and metropolitan levels. Ten of the firm’s attorneys were also named to the 2026 edition of Best Lawyers® across multiple practice areas.

Best Lawyers® ranks top lawyers and law firms through a peer review process, using feedback from lawyers, clients, and professional references, along with firm data. We’re proud to be recognized in the following categories:

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  • Mass Tort Litigation/Class Actions – Plaintiffs

Miami

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  • Mass Tort Litigation/Class Actions – Plaintiffs
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About Colson Hicks Eidson

Colson Hicks Eidson is a renowned law firm based in Miami, Florida, that is recognized as one of the top trial firms in the United States. Built on a foundation of over 50 years of dedication forging strong client relationships, Colson Hicks Eidson handles local, national, and international litigation, with cases spanning from Miami, Florida, and throughout the United States, to matters in the Caribbean, Central America, South America, and Europe. Learn more at: www.colson.com.