On Thursday, the FDA issued a warning about potential adverse effects that pets may encounter from certain flea and tick products. According to a release from the FDA, there is the “potential for neurologic adverse events in dogs and cats when treated with drugs that are in the isoxazoline class.”
The FDA has warned that certain products, which have already received the agency’s approval, may cause muscle tremors, ataxia and seizures. The FDA specifically named Bravecto, Nexgard and Simparica in the release.
The FDA stated that it “is working with manufacturers of isoxazoline products to include new label information to highlight neurologic events because these events were seen consistently across the isoxazoline class of products.”
After reviewing studies, the FDA believe that “these products continue to be safe and effective for the majority of animals.” The agency would like for adverse effects to be reported, stating:
The FDA continues to monitor adverse drug event reports for these products and encourages pet owners and veterinarians to report adverse drug events. You can do this by reporting to the drugs’ manufacturers, who are required to report this information to the FDA, or by submitting a report directly to the FDA.
To report suspected adverse drug events for these products and/or obtain a copy of the Safety Data Sheet (SDS) or for technical assistance, contact the appropriate manufacturers at the following phone numbers:
Merck Animal Health (Bravecto): 800-224-5318
Elanco Animal Health (Credelio): 888-545-5973
Merial (Nexgard): 888-637-4251
Zoetis (Simparica): 888-963-8471
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