Fall is here, or nearly so. That means the worst flea season is right around the corner. Fleas love the more moderate temperatures and humidity as we head out of summer and into fall. As pets start to grow thicker coats, fleas also find it easier to hide. There are new worries about popular flea and tick medicines.
What Flea and Tick Medicines Do You Use?
Many people prevent flea and tick infestations by dosing their pets with a chewable medicine such as Bravecto, Nexgard or Simparico. All these treatments contain compounds related to isoxazoline. This pesticide works by shutting down GABA-chloride channels in the nervous systems of the fleas or ticks.
A New Warning about Side Effects of Flea and Tick Medicines:
The FDA recently approved a new drug in this class, Credelio. At the same time, the agency issued a warning for pet owners. These chewable medications are considered safe for most animals, but they can cause neurologic side effects. Some animals experience muscle tremors, trouble walking or seizures as adverse reactions to these flea and tick medicines. If you notice any unusual neurological symptoms after dosing your dog or cat with oral flea and tick medicines, report the problem to your veterinarian and to the FDA promptly.