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. Margaret Caldwell says:

    I have sworn by Soresto collars for quite some time. These last 2 that I purchased were absolutely awful. I just returned from the vet with my Golden Doodle, who is also my service dog. I stayed up crying with him all night as he constantly scratched for the last day and a half. The collar was immediately removed when his behavior changed (after only wearing the collar properly for approximately 2 days). It has caused a major hotspot from his chin to the top of his chest (he had to be shaved); he now has to take a steroid as well as an antibiotic. The same thing happened to my beagle a few weeks ago, he also had to be shaved. I will never put another Seresto collar on them again.

    1. Margaret Caldwell says:

      “Seresto”

  2. Donna DeCosta says:

    Please can someone call me as I believe my dog is very ill due to wearing the arresting collar ???. She is going to the vet today and I plan to get tests run and nothing was wrong with her before where 2 rounds of 8 months of these collars!!! I want to talk to someone about this please ??

    1. Marie says:

      My dog was deathly ill. We removed his collar and in an hour or so back to his old self. The collar was poisoning him!!

  3. Donna DeCosta says:

    Please can someone call me as I believe my dog is very ill due to wearing the arresting collar ???. She is going to the vet today and I plan to get tests run and nothing was wrong with her before where 2 rounds of 8 months of these collars!!! I want to talk to someone about this please ??

  4. David Kelley says:

    Please add me. Our young pomski has developed seizures that we gave meds to alleviate. Our older Pomeranian lost his hair and it won’t grow back around his neck, skin turned black. Both developed coughs!

  5. Christine DiCarlo says:

    My vet recommended the collar when my Pitt Bull puppy, Lucci, was 9 months old. She advised us to stay away from the Frontline and other flea and tick products on the market because they were poison. I had used Frontline on my dog who we lost at 15 years old since he was a year old and never had an issues. Against my better judgment, we decided to listen to our experienced vet and we used the collar. My dog is now 12 months old has since developed a huge lump under his neck where the collar sits. I immediately removed the collar because I had a feeling this red, hairless, lump was caused by whatever is in the collar. I just got back from my vet and my dog is on 3 different antibiotics for the lump that is now oozing puss. He was a very healthy pure bread who comes from a very good bloodline. The vet still does not think the collar caused the problem but I know she is wrong. I’m not sure what kind of kick backs my vet is getting from this company but it is morally disgusting. Shame on this company!

  6. Nikki says:

    I know this is what caused siezures for my beautiful Tucker. They took such a strain on him at a young age after we started purchasing this collar if only I knew what I know now. Even on three pills a day he was having 2 siezures a month, starting at maybe 6,7 years old. The worst day of my life was when I came home to find him seizing on the floor for 45 minutes and my parents desperately trying to figure out what to do/ on the phone w the vet. I helped my parents put him in the car and go to emergency vet but it was too late, we lost him that night he died alone in the hospital. I have read so many similar experiences. He passed at 11 years old, because of the siezures it was too much on his heart, the last one really was too much for him.. I wish I never went back to work, if I was home I couldve helped my parents take him to the vet as soon as it surpassed 10 minutes. I would do anything to go back

  7. Donata Perilli says:

    My dog had multiple seizures every week for over a year. The vet could never give us an answer. My dog was given countless pills to try for neurological issues which made him sick. Finally, after reading up on the seresto collar we found an article reporting all these issues surrounding this seresto collar. Since we took it off, my dog has had no seizures! It was all due to this seresto collar !

  8. rhonda bender says:

    please add me

  9. rhonda bender says:

    Sad, sad for us pet owners

  10. Robert Combs says:

    We had two cats that died from the collars. One hid inside our dryer and later under the sink in a bathroom and died rather quickly. The other one we immediately took off collar. He lived about 2 more weeks before he died in the same way. Both collars came from same lot at Tractor Supply. They immediately stopped eating and drinking. We took collars off and the cats did not improve. The change in behaviors were almost immediate.

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