Christina Spicer  |  May 25, 2021

Category: Legal News

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The makers of the Seresto flea collar face another class action lawsuit claiming the product causes pets to become ill and even die.  

Lead plaintiff, Kevin Levensten, lodged the lawsuit in Pennsylvania federal court Monday, seeking to represent other state residents who purchased the allegedly dangerous item. Levensten claims that the makers of the Seresto flea collar, Elanco Animal Health Inc, along with parent company Bayer Corp, sold the Seresto flea collar despite knowing that substances included in the product could harm pets, as well as their owners.  

Levensten, a Pensylvania resident, says that his dog experienced seizures after he used a Seresto flea collar. The plaintiff claims that the flea collar’s active ingredients, the insecticides imidacloprid and flumethrin, caused his dog to experience seizures after they were released onto his pet’s hair and skin when wearing the flea collar.  

Levensten warns that the insecticides present a risk not only to pets, but also to owners and others who may handle the collars.  

The class action lawsuit alleges that the Environmental Protection Agency (EPA) has revealed a connection between insecticides used in the Seresto flea collar and as many as 75,000 reports of harm to pets and even humans. Levensten claims that the flea collars have been linked to 1,698 pet deaths and 1,000 reports of harm to people.  

Indeed, earlier this year, a joint investigation between USA Today and the Midwest Center for Investigative Reporting revealed that the agency received thousands of reports of human and pet injuries and illnesses linked to Seresto flea and tick collars 

Elanco Animal Health and parent company Bayer now face legal action, including at least one other class action lawsuit over the Seresto flea collar 

Problems in pets reported to the EPA allegedly include rashes, seizures and even death. People have reported suffering from rashes, neurological issues, heart palpitations, nausea, eye irritation, ocular pain, ocular redness, blurred vision, eyelid edema, numbing, skin lesions, rhinitis, urticaria, pruritus, erythema, conjunctivitis, nasal irritation, and nasal discharge, says the class action lawsuit.  

Levesten points out that the Seresto flea collar is the only product of its type on the market that contains the insecticide flumethrin; however, Elanco Animal Health fails to warn consumers about health risks associated with this substance.  

The class action lawsuit notes that the inserts in Seresto flea collar packages only warn of rare occurrences of “scratching, redness, and hair loss” and does not instruct pet owners to remove the collar if these occur. The inserts allegedly say that “dermatitis, inflammation, eczema or lesions” occur only “in very rare cases” and fail to warn of any human health effects.  

Despite the lack of warning, Levesten says that Seresto flea collars present severe health risks to pets and their owners. The plaintiff wants to represent potentially hundreds of thousands of Pennsylvania residents who purchased a Seresto flea collar between March of 2015 and the present.  

The class action lawsuit accuses Elanco Animal Health and Bayer of violating state consumer protection laws, breach of warranty, fraud, and negligence. Levensten is seeking damages on behalf of class members, as well as attorney and court fees.  

Have you used a Seresto flea collar on your pet? We want to hear from you! Tell us what happened in the comment section below.  

The lead plaintiff is represented by Daniel C. Levin, Nicholas J. Elia of Levin Sedran & Berman LLP, and Scott D. Levensten Law Firm, PC.  

The Seresto Flea Collar Class Action Lawsuit is Levensten v. Elanco Animal Health Incorporated, et al., Case No. 2:21-cv-02364 in the U.S. District Court for the Eastern District of Pennsylvania.  


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190 thoughts onSeresto Flea Collar Caused at Least 1,700 Pet Deaths, Says New Class Action Lawsuit

  1. Ruth A Anderson says:

    I put Seresto on my Golden Retriever mix and suddenly she has a rash. I will not use this again.

  2. elizabeth papp says:

    We used Seresto collars on our 3 dogs and cat over a year and a half. Our 9 year old Golden Retriever died suddenly, our mini doxy developed a tumor on her pituitary and cushing disease, and our indoor cat, age 10 died of leukemia all in this time frame. We stongly feel this was due to the collars and want justice. Liz

  3. Sheryl D. says:

    My 12 y/o lab/pit mix started having trouble with her hind quarters and mobility several months after starting to use the soresto collar. I brought her to the vet as I was concerned that she was in pain. A month later she collapsed, losing all use of her left hind leg and much use of her right. Having had a lab/shepherd mix previously who had hip dysplasia and my lab/pit with an ACL issue I didn’t know what was wrong. She couldn’t stand up or walk and was running a fever of over 103 degrees. I never suspected the collar and the emergency vet cited all kinds of possible reasons like cancer, infection, neurological issues, all of which would have cost thousands to test for with no real hope for a good prognosis. We had to put her down.
    IF THIS HAS HAPPENED TO YOUR PET OR FAMILY MEMBER PLEASE SUBMIT A CLAIM NOW!!!

  4. Michael Mills says:

    Our cats also developed sores on their necks

  5. Carrie Fohl says:

    I have been breeding GSD’s for 20 years and we started losing litter or our females weren’t getting Pregeant in 2017, after using the collars for several years. The only common denominator that changed was using the collars. We have lost a significant amount of money over 5 years.

  6. Shawn Ray says:

    My cat developed a cancerous lump and bald spot on his neck after wearing this collar. Please add me.

  7. Aaron Denson says:

    I put serbesto on my 2 Shelties 2 weeks ago. Over the weekend, both of them had diarrhea, come Monday, one was puking about once every hour. Then on Tuesday, one dog still puking, the other had most of his mane missing and raw skin with liquid coming out where the collar is. I immediately took the collar off them and started searching the internet for info. That’s where I learned about the lawsuits coming.
    I’m shocked these products are still on the shelves. This is nuts!

  8. James Thies says:

    My brother used them and his cat has seizures. Add me and I’ll give the information to him

  9. Annette Greninger says:

    How can I be added to the lawsuit, I left a comment a week ago

  10. Sandra Cosimano says:

    Our rottweiler dog used Seresto flea collar for 4-5 years before developing terminal malignancy on her neck. Please add me.

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