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. Anderson says:

    My pup developed seizures when wearing the Seresto collars. In the winter when we don’t use the collar she has no seizures. I believe the collars cause them.

  2. Terri Pronivich says:

    My St Poodle wore the Seresto color and had very bad seizures.previous to that he had a big thick hard spot under the skin of his neck which was operated on and he had ingrown hairs .Ididnt think of any connection between the. Collar but now my dog is very sick with cancer he was a heathy dog until the collar .that collar should be banned to ok many dog getting serious problem and death and people are hurt seriously.

  3. Lori Fortese says:

    please contact me my pet died i think it was from the collar was perfect health before we put it on him

  4. Brett says:

    My cats developed rashes. I have to take one of them to the vet this week. She is very skinny and weak.

  5. Debbie Makowski says:

    I lost my beloved golden retriever over two years ago due to the collar my vet told me it would be the best way to control fleas and ticks and lice and everything so I listened stupid me within two months he was having seizures walking in circles he lost his eyesight of course I took the collar off immediately spent thousands of dollars on vet bills and medication’s to keep him alive and to keep him going but the seizures was so bad he would lose his bowels he would urinate uncontrollably he would have grand mal seizures in the middle of the night and during the day he was on so much medication he got aggressive with my other animals I am heartbroken that I listened and now my beloved golden retriever notch is dead I called Ceresco and I spoke to them and I told him what happened and all they told me was that must’ve been an underlying condition but will give you your money back for the collar and they did big deal please add me to this lawsuit I still have all the vet bills from notch to show everything that I put in to try and save my dog I even took him to the groomer after I realized it was probably the collar causing the seizures but it was too late it was already in his system I’m still heartbroken he was the best dog ever please put me on this list I will go to court I will do anything I have to do this color should not be on the market

  6. Suzanne & James Lefever says:

    We used Seresto flea collar on our beautiful Leonburger and it killed him. He had a big tumor and big red sores all over his body. He lost a lot of hair and had no energy at all. Brought him to the vet many times and they just could not cure him.

    1. Debbie Makowski says:

      i’m so sorry for your loss I too lost my beautiful golden retriever due to seizures and a brain tumor that developed within two months after using this collar I truly believe this collar killed my beloved notch he was the best dog I spent thousands of dollars to try and save him but the tumor kept getting bigger and bigger until finally he passed away on me discolor needs to be taken off the market
      I’m very upset that my vet said this was the best collar for him and it would keep all of those nasty drugs off of his skin and he wouldn’t have to ingest anything I feel horrible that I actually listened I tell everyone I know to not use this collar when I called the company about it and said how sick he got from the car all they did was refund my money for the collar but I have no dog now because of that color

  7. Jay Jackson says:

    My dog head used Seresto collars for a couple of years and now has a huge lump on her neck.

  8. Lori Fortese says:

    my dog just died was sick after she had the seresto collar didn’t think it was related but now i know it was please contact me about this

  9. Ayla Lang says:

    I started using these collars for my dog about 2 years ago, and he started having seizures then they got aggressive. Bleeding from nose and mouth, not being able to control his bladder, dazzing out, drooling, blurred vision. He would lay around for days not feeling well. If these collars are causing this much damage something definitely needs to be done!

  10. Jody Garofalo says:

    Add me please

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