On September 20, 2018, the U.S. Food and Drug Administration issued an alert to pet owners and veterinarians concerning the potential for animals receiving Bravecto, Credelio, Nexgard, or Simparica. Some animals receiving these products have experienced adverse events such as muscle tremors, ataxia ( loss of full control of bodily movements ), and seizures.
The alert states “The FDA carefully reviewed studies and other data on Bravecto, Credelio, Nexgard, and Simparica prior to approval, and these products continue to be safe and effective for the majority of animals.”
If you are currently using any of these products, you may wish to discuss other options with your veterinarian.
You may read and download the FDA alert at https://www.fda.gov/AnimalVeterinary/NewsEvents/CVMUpdates/ucm620934.htm
The FDA has also published a fact sheet on this topic which you may read and download at https://www.fda.gov/AnimalVeterinary/NewsEvents/CVMUpdates/ucm620934.htm