FDA Warns Pet Owners About Flea, Tick Meds Linked To Seizures

Desiree Burns
September 22, 2018

"Another product in this class, Credelio, recently received FDA approval".

"Isoxazoline products have been associated with neurologic adverse reactions, including muscle tremors, ataxia, and seizures in some dogs and cats", the FDA says. "These products are approved for the treatment and prevention of flea infestations, and the treatment and control of tick infestations", the FDA continued.

While the medications are still considered safe, the FDA is working to include new label information to highlight neurologic events.

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Dozens of South Africans are among the many dog owners who have reported that their dogs became ill or died after being given Bravecto‚ a product which claims to provide 12 weeks of protection against fleas and ticks with a single treatment. Pet owners should consult with their veterinarian to review their pets' medical histories and determine whether a product in the isoxazoline class is appropriate. In the first three years after approval, the FDA pays particularly close attention to adverse event reports, looking for any safety information that may emerge. The FDA has been collecting and monitoring reports of these types of reactions from drugs in this class and urges pet owners who notice anything odd to contact either the FDA directly or any of the manufacturers who produce the drugs, including Merck, Elanco, Merial, and Zoetis.

The FDA is quick to point out that the majority of pets that have been treated drugs from the isoxazoline class haven't experienced negative side effects.

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