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Seresto Collars

Dear clients,

A link between pet deaths and Seresto flea and tick collars has been reported in the news recently, and I want to be sure you have the most accurate information about it. You may have noticed the story and data do not show causality between the collar and death. All adverse events from using the Seresto collar are collected, evaluated and reported. The rate of incidents is less that 0.3%, most of them involving mild skin irritation or hair loss.

If you think your pet may have had an adverse effect from any product, please report it to the company listed on the product packaging or available online. We can help if you ever purchase a product from us and have an adverse event.

Some important points to keep in mind:

  • Please don’t stop using flea/tick preventatives! Ticks are endemic to our area, as is Lyme disease.
  • Seresto collars continue to be our safest recommendation for dogs with a history of seizures.
  • The Seresto collar production and ingredients have not changed since its approval in 2012.
  • There are many counterfeit collars on the market labeled Seresto. We recommend buying products like this from your veterinarian because they are guaranteed.
  • Be suspicious if you see a Seresto collar at a very cheap price, because it is very likely to be counterfeit and may not be safe.

On a personal note, I have three small dogs, one with a seizure history, and they have worn Seresto collars for many years. I would never recommend something that I don’t feel is safe enough to use on my own pets.

Please call us at (207) 725-6398 or email us at if you have any questions about parasite preventatives and your pet.

–Dr. Seymour

Additional information can be found at