Even when pets ingest the collars-which happens fairly often with dogs-she said, “the toxicity of these collars is extremely low, and they have no ‘red flags’ on this particular product.” ‘You don’t necessarily know where these collars are coming from.’īoth toxicologists agreed the prevalence of counterfeit products could make it difficult to interpret the incident reports. On a listserv for veterinary toxicologists, Gwaltney-Brant said her colleagues expressed surprise at the concerns about Seresto collars. This is why looking at the raw data from these agencies is so dangerous - they reflect only the reports, not any ancillary information required to determine if there’s actually any merit to the report.” She added without a veterinary examination or necropsy (an animal autopsy) to rule out other potential causes of illness or death, “you cannot make a cause-effect connection.” ‘The toxicity of these collars is extremely low.’ “That doesn’t mean it’s true or accurate. “Anyone can report anything to regulatory agencies,” she said. Sharon Gwaltney-Brant, pointed out that consumer reports to the EPA are often anecdotal and unverified. The fact that the signs are very random makes me think that probably is not involved.” ‘You cannot make a cause-effect connection.’Ī second VIN toxicology consultant, Dr. Tina Wismer, medical director at the ASPCA Animal Poison Control Center and a toxicology consultant for VIN, said, “Looking at these reports, these are very random things, ranging from ruptured eardrums - which I can’t make fit really at all - to liver failure, to heart problems, to kidney failure. ![]() ![]() Quoted in an article published by the Veterinary Information Network (VIN) on March 5, 2021, Dr. While the article alluded to numerous consumer reports to the Environmental Protection Agency (EPA) implicating the collars in the deaths of nearly 1,700 pets, injuries to tens of thousands of pets and health problems for hundreds of pet owners, there is no way to know for sure, based solely on raw, unverified anecdotal evidence, that the collars actually caused such a myriad of problems. Rather than look to the popular press for definitive veterinary medical information, we decided to find out what veterinary toxicologists-none of whom were interviewed for the USA Today article-have to say in response to the article. So are Seresto flea and tick collars safe? ![]() The clients who use Seresto collars for their pets seem to love them. We’ve heard no such stories from other veterinarians, nor have we read about them in veterinary medical publications. However, in all our years of recommending Seresto collars for our patients, we’ve witnessed no such severe side-effects as described in the USA Today article. ![]() On our first read-through, we found the article concerning ourselves!Īfter all, we’ve been recommending these collars for years as a convenient, effective alternative to monthly oral and topical preventives. We understand how clients reading the USA Today article would be deeply concerned-especially if their pets wear Seresto collars! The collars are effective at controlling fleas and ticks for eight months. Since Bayer introduced the collars in 2012, more than 25 million have been sold in the U.S. The collar in question is Bayer brand’s Seresto flea and tick collar for dogs and cats, now sold by Elanco, which acquired Bayer Animal Health in August 2020. On March 3, 2021, USA Today published an article with this alarming headline: ‘Popular flea collar linked to almost 1,700 pet deaths.
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