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FDA Warns Tick And Flea Medicine For Pets May Cause Severe Health Issues


There has been a lot of recalls and warnings about popular medicines and foods in the past couple months, and now a few popular pet medicines may join the list.

While the FDA has not issued a recall on these products, they're issuing a warning to pet owners and veterinarians about the potential risks.

They speculate that some tick and flea medicines, which are used to treat and prevent infestations, could cause neurological issues in your cat or dog.

This warning is enough to get any pet owner worried!

Here's What You Need To Know

As the cold weather rolls in, we'll be saying goodbye to tick season, but we'll have to be prepared to administer the medicine once springs comes around.

If you live in a warmer climate, then you may be giving your pet this medicine all year round.

The FDA thinks there may be potential adverse reactions when pets are treated with drugs that are in the isoxazoline class, which includes FDA-approved drugs like Bravecto, Credelio, Nexgard and Simparica.

"Isoxazoline products have been associated with neurologic adverse reactions, including muscle tremors, ataxia, and seizures in some dogs and cats," the FDA's website states.

"Although most dogs and cats haven't had neurologic adverse reactions, seizures may occur in animals without a prior history."

Here's What You Should Do

The FDA considers these drugs as "safe and effective," but encourages pet owners to talk to their veterinarian to discuss the right product for their pet.

If your pet has had an adverse reaction to one of these drugs, first consult your vet.

The FDA also encourages pet owners to report any issues with the drug's manufacturer or submit a report directly to the FDA.

  • Merck Animal Health (Bravecto): 800-224-5318
  • Elanco Animal Health (Credelio): 888-545-5973
  • Merial (Nexgard): 888-637-4251
  • Zoetis (Simparica): 888-963-8471

[H/T: WFTS Tampa Bay]

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Moojan has been a writer at Shared for a year. When she's not on the lookout for viral content, she's looking at cute animal photos. Reach her at